I NEED HELP BADLY


While driving her car at 40 m/s, Andrea (with a mass of 50-kg) stops short to avoid hitting a squirrel crossing the road. If the seat belt is in contact with Andrea for 0.5 seconds, determine:

a.) Andrea’s initial momentum





b.) Andrea’s final momentum





c.) What is the change in momentum (impulse)?





d.) What is the force that the seatbelt exerts on Andrea?

Answers

Answer 1

Answer:

a) Andrea's initial momentum, 200 kg m/s

b) Andrea's final momentum, 0

c) Impulse,  = - 200 Ns

d) The force that the seat belt exerts on Andrea, - 400 N

Explanation:

Given data,

The initial velocity of the car is, u = 40 m/s

The mass of Andrea, m = 50 kg

The time period of deceleration, a = 0.5 s

The final velocity of the car, v = 0

a) Andrea's initial momentum,

               p = mu

                  = 50 x 40

                  = 200 kg m/s

b) Andrea's final momentum

                  P = mv

                     = 50 x 0

                    = 0 kg m/s

c) Impulse

                   I = mv - mu

                     = 0 - 200

                    = - 200 Ns

The negative sign indicated that the momentum is decreased.

d) The force that the seat belt exerts on Andrea

                   F = (mv - mu)t

                     = (0 - 200) / 0.5

                     = - 400 Ns

Hence,the force that the seat belt exerts on Andrea is, - 400 N


Related Questions

-> What is permanant induction?

Answers

Answer:

Permanent Charging. When you take a temporarily charged object and ground it, the charged object retains its charge. This is called permanent charging by induction.

11. Which has more mass, a 2 kg fluffy pillow or a 3 kg small piece of iron? More volume? Why are your
answers different?

Answers

Final answer:

A 2 kg fluffy pillow has more volume, while a 3 kg small piece of iron has more mass due to their differences in density.

Explanation:

A 2 kg fluffy pillow has more volume, while a 3 kg small piece of iron has more mass.

The volume of an object is the amount of space it occupies. The fluffy pillow, being soft and compressible, takes up more space than its mass would suggest.

The mass of an object, on the other hand, is the amount of matter in it. The small piece of iron, though heavier, occupies less space and has a higher density than the fluffy pillow.

Learn more about Comparing mass and volume here:

https://brainly.com/question/33058328

#SPJ2

A 3 kg piece of iron has more mass than a 2 kg pillow, but the pillow likely has a greater volume due to lower density. The difference in density affects the volume that the same mass of two different materials occupies.

The 3 kg small piece of iron has more mass than the 2 kg fluffy pillow because 3 kg is greater than 2 kg. However, the fluffy pillow likely has more volume because it is less dense than the iron. This difference occurs because density is defined as mass divided by volume. The iron has a higher density which means it has more mass in a given volume compared to the pillow's material. For instance, a kilogram of feathers has the same mass as a kilogram of iron, but the feathers occupy a much larger volume because they are less dense.

Let's consider the weight in Newtons as an example. The weight of an object on Earth can be calculated by multiplying its mass in kilograms by the acceleration due to gravity (9.8 m/s2). So, the weight of a 3 kg textbook is approximately 29.4 Newtons (3 kg × 9.8 m/s2).

Finally, comparing materials of the same weight, a pound of gold has the same mass as a pound of iron on Earth’s surface, but their volumes and thus their densitiess Will differ. The density is the critical factor determining volume for the same mass of two different substances.

Describe the medium that electromagnetic waves use to travel

Answers

Answer:

Electromagnetic waves do not require a medium to propagate means they  can travel through air and solid material and the vacuum of space too.

they move the fastest through gases mostly because particles in gases are spread out more than the particles in solids or in liquids so they move quickly through gases.

Explanation:

PLEASE HELP QUICKLY!!
Define and compare the relationship between the following principles. Provide a supporting example for each
comparison

• Original Horizontality

• Original Lateral Extension

•Cross-Cutting Relationships

•Inclusion

•Uniformities

Answers

Answer:

These 5 principles can be better understood from the past events as well as from formation of the sedimentary rocks

Explanation:

Principle of original horizontal- the sedimentary rocks are found to be horizontal during the initial deposits phase. If  tilted this is due to the subsequent geological event.

Principle of original lateral continuity- The sedimentary beds are originally laterally continuous into their environment of deposition. Faulting in the severe folding and also erosion may leads to the separation of the originally lateral continuous beds which in later becomes separate units.

Principle of cross cutting- The younger features can get cuts across the older features. That's why faults,  erosion, volcanoes etc can be seen. The above mentioned are younger than those materials that is faulted intruded, or eroded.

Principle of inclusion- Inclusion itself means (a rock fragment another rock fragment) they must be older than the materials in.

Principle of uniformity-  Those are the physical process that are been seen today, were also worked in the same way in the geologic past, thus modern methods helps us to understand the ancient events.

The
of an object consists of its speed and direction.
a. Average speed
b. Instantaneous speed
c. Velocity
d. Displacement

Answers

Answer:

c. Velocity

Explanation:

Velocity is a measure of change of position of the body with time. Change of position means the distance traveled by the object in a given interval of time but in a particular direction.

We know that speed is given as the distance traveled over a given time interval without taking into account the direction of motion. So, the magnitude of velocity is same as its speed. Velocity, being a vector quantity, has both magnitude and direction.

Therefore, the velocity of an object consists of its speed and direction.

Assume you drop a package from the third floor and it takes 3.60 seconds to reach the floor. If the object was In complete free fall what would the velocity be right before hitting the floor ?

Answers

Answer:

The velocity of the package before hitting the floor is 35.28 m/s.

Explanation:

Given:

The package is dropped, so initial velocity is, [tex]u=0\ m/s[/tex]

Time taken to reach the floor is, [tex]t=3.60\ s[/tex]

The motion is a complete free fall motion.

When the body is in free fall, the only acceleration acting on the body is due to gravity.

Therefore, the acceleration of the package is, [tex]a=g=9.8\ m/s^2[/tex]

Now, final velocity of the package is, [tex]v=?[/tex]

In order to find the final velocity, we need to use the Newton's equation of motion that relates initial velocity, final velocity, acceleration and time taken.

So, the equation of motion used is given as:

[tex]v=u+at[/tex]

Plug in the given values and solve for 'v'. This gives,

[tex]v=0+9.8\times 3.60\\v=35.28\ m/s[/tex]

Therefore, the velocity of the package before hitting the floor is 35.28 m/s.

Answer:

35.316 [tex]m/s[/tex]

Explanation:

Given: [tex]t=3.60\ sec[/tex]

In free fall velocity does not depend upon height of fall.

Now, we will use the relation between final velocity (v) and initial velocity (u) and time (t) under free fall.

That is [tex]v=u+gt[/tex]

Where 'g' is acceleration due to gravity which is [tex]9.81 m/s^2[/tex]

Here initial velocity (u) is zero as package was dropped from rest.

Plugging the values in the equation, we get.

[tex]v=u+gt\\\\v=0+9.81(t)\\\\v=9.81(3.60)\\\\v=35.316\ m/s[/tex]

Hence, the velocity with which the ball will hit the ground will be [tex]v=35.316\ m/s[/tex].

Explain the arguments for and against the theory that animals have the capacity for language, like humans.
Show Me

Answers

Final answer:

The arguments for and against the theory that animals have the capacity for language, like humans, revolve around communication abilities and linguistic complexity. Some argue that animals can communicate using complex systems of signs, sounds, and gestures, while others claim that their communication lacks the complexity and structure of human language.

Explanation:

There are arguments both for and against the theory that animals have the capacity for language, like humans. Some argue that animals do have the capacity for language based on their ability to communicate with each other and with humans using complex systems of signs, sounds, and gestures. For example, dolphins use a system of clicks and whistles to communicate with each other. Some primates have been taught sign language and can use it to communicate with humans.

On the other hand, some argue that animals do not have the same capacity for language as humans. They point out that while animals can communicate, their communication lacks the complexity and structure found in human language. Animal communication is often limited to simple signals or gestures, rather than the complex syntax and grammar of human language.

Additionally, animals do not exhibit the same level of linguistic creativity and symbolic thought as humans. For example, humans can use language to discuss abstract concepts, tell stories, and express emotions, whereas animals typically use communication for more practical purposes such as signaling danger or finding food.

Learn more about animal language here:

https://brainly.com/question/14928413

#SPJ12

what is meant by the statement that the linear expansivity of copper is 0.000017/k?


help me .




oh, and uhmm;
steel bars each of length 3m at 29°c are to be used for constructing a rail line. if the linear expansivity of steel is 1.0×10⁻⁵/k. calculate the safety gap that must be kept between successive bars, if the highest temperature expected is 40°c

Answers

1) It means that the ratio [tex]\frac{\Delta L}{L}[/tex], where [tex]\Delta L[/tex] is the change in length of the material and L is the original length, change by 0.000017 units for an increase in temperature of 1 Kelvin.

2) The safety gap between two successive bars is 0.33 mm

Explanation:

1)

When a solid material is heated and its temperature increases, the material expands. The linear expansivity of the material gives a measure of how much the length of the material increases per unit temperature change.

For instance, the linear expansivity of copper is

[tex]\alpha = 0.000017/K[/tex]

which means that the ratio [tex]\frac{\Delta L}{L}[/tex], where [tex]\Delta L[/tex] is the change in length of the material and L is the original length, change by 0.000017 units for an increase in temperature of 1 Kelvin.

In formula, this can be rewritten as

[tex]\frac{\Delta L}{L} = \alpha \Delta T[/tex]

where [tex]\Delta T[/tex] is the change in temperature of the material.

2)

To solve this part of the problem, we can use the formula given in the previous part:

[tex]\frac{\Delta L}{L} = \alpha \Delta T[/tex]

Which can be rewritten as

[tex]\Delta L =L \alpha \Delta T[/tex]

where in this case, we have:

L = 3 m is the original length of the steel bar

[tex]\alpha = 1.0\cdot 10^{-5} /K[/tex] is the linear expansivity of steel

[tex]\Delta T = 40^{\circ}C-29^{\circ}C=11^{\circ}C[/tex] is the increase in temperature of the steel bar

Therefore, by solving the formula for [tex]\Delta L[/tex], we find the increase in length of the steel bars when the temperature increases to 40 degrees:

[tex]\Delta L = (3)(1.0\cdot 10^{-5})(11)=3.3\cdot 10^{-4} m = 0.33 mm[/tex]

This means that the safety gap between two successive bars must be 0.33 mm.

Learn more about temperature:

brainly.com/question/1603430

brainly.com/question/4370740

#LearnwithBrainly

A Jeep is stuck in the mud. The driver has a winch that can pull on its cable with a force of 35,000 N. The driver loops the cable through a pulley attached to a tree, then attaches the end of the cable to his Jeep, as shown in figure 1. What is the magnitude of the maximum force that can be exerted on the Jeep by this cable arrangement? Express your answer with appropriate units.

The pulley system has a cable attached to either side of the front end of the jeep which connects to a pulley attached to a tree.

Answers

Answer:

70,000 N

Explanation:

Draw a free body diagram of the Jeep.  There are two tension forces, both pulling the Jeep towards the tree.

The net force is:

ΣF = 2T

ΣF = 2 (35,000 N)

ΣF = 70,000 N

The maximum force that can be exerted on the Jeep due to the cable arrangement is 70000N.

Force, Tesnion = 35000N F = mass × acceleration

The net force, ΣF ; can be calculated thus :

Net force = 2 times the Tension

ΣF = 2 × Tension

Net force = 2 × 35000

Net force = 70,000 N

Therefore, the net force that is exerted on the Jeep is 70,000N.

Learn more : https://brainly.com/question/14035678

What do I have to do to figure out " What % of an object’s mass is above the water line if the object’s density is 0.82g/ml " with just that information?

Answers

Answer:

18%

Explanation:

There are two equal and opposite forces on a floating object: weight and buoyancy.

W = B

The weight of an object is its mass times gravity: W = mg

Buoyancy is the weight of the displaced fluid: W = mf g

Plugging in:

mg = mf g

m = mf

Mass is density times volume:

ρV = ρf Vf

Solving for the ratio of Vf / V:

Vf / V = ρ / ρf

Given that ρ = 0.82 g/mL and ρf = 1.00 g/mL:

Vf / V = 0.82

That means 82% of the object's volume (and therefore, 82% of its mass, assuming uniform density) is submerged.  Which means that 18% is above the water line.

Investigators should collect virtually everything from a crime scene. True or false?

Answers

I think it would be TRUE but I’m not 100% sure.... please let me know if I’m right or wrong

Answer:

false

Explanation:

its a trick question. not all evidence should be collected from the crime scene due to not all the evidence be useful.

A block of mass m is attached atthe end of a spring of force constant 10N/m vibrates in SHM with frequency of 10/bi Hz. Find the mass of the block

Answers

Answer:

The mass of the block is 0.025 kg

Explanation:

Mass-Spring Harmonic Motion

When a mass m is attached to a spring of constant k, they produce a simple harmonic motion which angular frequency is

[tex]\displaystyle w=\sqrt{\frac{k}{m}}[/tex]

We also know

[tex]w=2\pi f[/tex]

which means

[tex]\displaystyle \sqrt{\frac{k}{m}}=2\pi f[/tex]

Squaring

[tex]\displaystyle \frac{k}{m}=4\pi^2 f^2[/tex]

Solving for m

[tex]\displaystyle m=\frac{k}{4\pi^2 f^2}[/tex]

We have

[tex]k=10 N/m, f=10/\pi Hz[/tex]

[tex]\displaystyle m=\frac{10}{4\pi^2 \left (\frac{10}{\pi}\right )^2}[/tex]

Operating

[tex]\displaystyle m=\frac{10}{4\pi^2 \frac{100}{\pi^2}}[/tex]

Simplifying and computing

[tex]\displaystyle m=\frac{1}{40}=0.025\ kg[/tex]

The mass of the block is 0.025 kg

when measuring the volume of a liquid using a graduated cylinder, the absolute error was 0.6 cm² and the relative error was 1.2% ,so what is the actual value of volume of the liquid?​

Answers

The actual volume of the liquid is [tex]50 cm^2[/tex]

Explanation:

When doing a measurement, there are two types of errors that we can define:

Absolute error: it is the absolute value of the error on the measurement. In this case, it is [tex]E_a = 0.6 cm^3[/tex]Relative error: it is the error expressed as a fraction of the value of the measurement. Mathematically, [tex]E_r = \frac{E_a}{V}\cdot 100[/tex], where [tex]E_a[/tex] is the absolute error, V is the measurement (the volume, in this case). In this problem, [tex]E_r = 1.2\%[/tex]

In this problem we have:

[tex]E_a=0.6 cm^2[/tex] (absolute error)

[tex]E_r = 1.2\%[/tex] (relative error)

Using the formula for the relative error, we can find the actual value of the volume of the liquid:

[tex]V=\frac{E_a}{E_r}\cdot 100 = \frac{0.6}{1.2}\cdot 100 =50 cm^3[/tex]

Learn more about errors:

https://brainly.com/question/2764830

#LearnwithBrainly

The table below shows the atomic mass of four stable calcium
(Ca) isotopes.
Isotope Atomic Mass
Ca-40
40
Ca-42
Ca-43
43
Ca-44
44
What characteristic is different in each isotope?
A
the position in the periodic table of the elements
B
the net charge of the nucleus
©
the mass of the protons in the nucleus
D
the number of neutrons in the nucleus

Answers

Final answer:

The characteristic that changes in each isotope of calcium is the number of neutrons in the nucleus. The atomic number remains the same for all the isotopes.

Explanation:

The characteristic that differs in each isotope of an element, in this case, Calcium (Ca), is D. the number of neutrons in the nucleus. An isotope is a variant of a particular chemical element, and what distinguishes one isotope from another is the number of neutrons. For instance, Ca-40, Ca-42, Ca-43, and Ca-44 hold 20, 22, 23, and 24 neutrons, respectively. The atomic number, which represents the number of protons in an atom, remains the same for all isotopes of an element. Therefore, the number of neutrons in the nucleus is the only characteristic that changes within isotopes of the same element.

Learn more about Isotopes here:

https://brainly.com/question/27475737

#SPJ3

The correct answer is D. The only characteristic that varies among the listed calcium isotopes is the number of neutrons in the nucleus.

Since the atomic number of calcium (Ca) is 20, each isotope of calcium has 20 protons. The isotopes listed in the question, Ca-40, Ca-42, Ca-43, and Ca-44, have atomic masses of 40, 42, 43, and 44, respectively.

To find the number of neutrons in each isotope, we subtract the number of protons (which is constant for calcium) from the atomic mass:

- For Ca-40: 40 (atomic mass) - 20 (protons) = 20 neutrons

- For Ca-42: 42 (atomic mass) - 20 (protons) = 22 neutrons

- For Ca-43: 43 (atomic mass) - 20 (protons) = 23 neutrons

- For Ca-44: 44 (atomic mass) - 20 (protons) = 24 neutrons

As we can see, the number of neutrons varies in each isotope, which is the characteristic that is different for each isotope listed.

The other options provided in the question can be ruled out based on the following reasons:

 A. the position in the periodic table of the elements - All calcium isotopes have the same position in the periodic table because they all have 20 protons, which defines their atomic number and thus their position in the periodic table.

B. the net charge of the nucleus - The net charge of the nucleus is determined by the number of protons, which is the same (20) for all calcium isotopes. Therefore, the net charge of the nucleus does not vary among these isotopes.

C. the mass of the protons in the nucleus - The mass of a proton is constant and does not vary from one isotope to another. All calcium isotopes have the same number of protons, so the mass of the protons is not the characteristic that differs among these isotopes.

If you decrease the wavelength of a wave, the frequency should

Answers

Answer:

The frequency should increase.

Explanation:

The wavelength of a wave varies inversely to frequency of the wave.

The relation between the frequency and wavelength of a wave is given as:

[tex]f\lambda=v[/tex]

Here, [tex]f\to frequency\\\lambda\to wavelength\\v\to velocity\ of\ wave[/tex]

Therefore, as the wavelength increases then the frequency will decrease.

Similarly, as the wavelength of the wave decreases, then the frequency will increase.

So, the frequency should increase if you decrease the wavelength of a wave.

A block of lead has dimensions of 4.50 cm by 5.20 cm by
6.00 cm. The block weighs 1590g. Calculate the density
of lead.​

Answers

Answer:

[tex]0.01132 g/mm^{3}[/tex]

Explanation:

Density, [tex]\rho=\frac {m}{v}[/tex]

Where m is the mass of the object and v is the volume of the same object

Given the dimensions, we can make them in mm hence 45 mm by 52 mm by 60 mm

Volume=45*52*60= 140400 mm^{3}

Density, [tex]\rho=\frac {1590}{140400}=0.011324786 g/mm^{3}\approx 0.01132 g/mm^{3}[/tex]

How do i figure this out?
explanation not just a answer

Answers

Answer:

You now this question state why a person standing at point Y hears an echo

Explanation:

Density is mass divided by volume.  For example, Block A:

ρ = m / V

ρ = 60 g / 125 cm³

ρ = 0.48 g/cm³

I assume each block is a cube, so the length of block underwater divided by the side length of the block is the percent underwater.

% = 1.8 / 3.9

% = 46%

Repeat for Blocks B through E.

Electricity The power P, in watts, that a circular solar cell produces and radius of the cell in centimeters are related by the square root equation
[tex]r = \sqrt{ \frac{p }{0.02\pi} } [/tex]
about how much power is produced by a cell with a radius of 12 cm?​

Answers

Answer:

9.05 W

Explanation:

The given formula is [tex]r=\sqrt {\frac {P}{0.02\pi}}[/tex] where r is in centimeters and P is in Watts

Making Power, P the subject from the above formula

[tex]P=0.02\pi r^{2}[/tex]

Substituting r with 12 cm then

[tex]P=0.02\pi 12^{2}= 9.047786842  W\approx 9.05 W[/tex]

Final answer:

A cell with a radius of 12 cm produces approximately 2.88π watts of power.

Explanation:

The given equation relates the power P produced by a circular solar cell to the radius r of the cell. To find the power produced by a cell with a radius of 12 cm, you can substitute this radius value into the equation.

Using the equation r = √(p / (0.02π)), we have r = √(p / (0.02π)). Plugging in r = 12 cm, we can solve for P.

12 = √(p / (0.02π)) ⇒ [tex]12^2[/tex] = p / (0.02π),

or 144 = p / (0.02π).

Multiplying both sides of the equation by (0.02π), we get:

2.88π = p.

Therefore, a cell with a radius of 12 cm produces approximately 2.88π watts of power.

Consider a golf club hitting a golf ball that results in the following graph of force versus time on a 45 gram golf ball. If the final velocity of the ball has a magnitude of 41 m/s, determine the value of Fmax

Answers

The question is missing the graph. So, the graph is attached below.

Answer:

The value of [tex]F_{max}[/tex] is 7380 N.

Explanation:

Given:

Mass of the ball is, [tex]m=45\ g=0.045\ kg[/tex]

Initial velocity of the ball is, [tex]u=0\ m/s(Assuming)[/tex]

Final velocity of the ball is, [tex]v=41\ m/s[/tex]

From the graph,

Time interval for which the force acts, [tex]\Delta t=0.5\ ms=0.5\times 10^{-3}\ s[/tex]

Height of the triangle is equal to the maximum force acting on the ball = [tex]F_{max}[/tex]

Now, we know that, impulse acting on the ball is equal to the area under the curve of force and time graph.

So, impulse is equal to the area of the triangle and is given as:

Impulse = [tex]\frac{1}{2}\times base\times height[/tex]

Here, base is time interval [tex]\Delta t[/tex] and height is [tex]F_{max}[/tex].

Impulse = [tex]\frac{1}{2}\times (0.5\times 10^{-3})\times F_{max}[/tex]

Impulse = [tex]0.25\times 10^{-3}F_{max}[/tex]

Now, we also know that, impulse is equal to the change in momentum of a body.

Therefore, change in momentum (Δp) is given as:

[tex]\Delta p=m(v-u)\\\Delta p = 0.045(41-0)=1.845\ kgms^{-1}[/tex]

Now, change in momentum is equal to impulse acting on the ball. Thus,

[tex]0.25\times 10^{-3}F_{max}=1.845\\\\F_{max}=\frac{1.845}{0.25\times 10^{-3}}\\\\F_{max}=7380\ N[/tex]

Therefore, the value of [tex]F_{max}[/tex] is 7380 N.

what is meant by the statement that the linear expansivity of copper is 0.000017/k?
help me
oh, and uhmm;
steel bars each of length 3m at 29°c are to be used for constructing a rail line. if the linear expansivity of steel is 1.0×10⁻⁵/k. calculate the safety gap that must be kept between successive bars, if the highest temperature expected is 40°c

Answers

a) It means that the relative change of length of the copper, [tex]\Delta L/L[/tex], increases by 0.000017 for each increase in temperature of 1 degrees

b) The safety gap must be 0.33 mm

Explanation:

a)

The linear expansivity of a material is a measure of how much the length of a sample of that material expands per unit increase of temperature.

Mathematically, the linear expansivity can be written as

[tex]\alpha = \frac{\Delta L/L}{\Delta T}[/tex]

where

[tex]\Delta L[/tex] is the change in length of the sample

L is the original length of the sample

[tex]\Delta T[/tex] is the change in temperature of the sample

For instance, in this problem, we are told that the linear expansivity of copper is

[tex]\alpha = 0.000017/K[/tex]

Which means that the relative change of length of the copper, [tex]\Delta L/L[/tex], increases by 0.000017 for each increase in temperature of 1 degrees.

b)

We can re-write the formula written in part a as

[tex]\Delta L = \alpha L \Delta T[/tex]

where, applied to this problem, each variable means:

[tex]L[/tex] is the length of the steel bar

[tex]\alpha[/tex] is the linear expansivity of steel

[tex]\Delta L[/tex] is the change in length of the steel bar when the temperature increases by [tex]\Delta T[/tex]

In this problem, we have:

L = 3 m

[tex]\alpha = 1.0\cdot 10^{-5}/K[/tex]

[tex]\Delta T = 40^{\circ}C-29^{\circ}C=11^{\circ}C[/tex]

Therefore, the change in length of a steel bar is

[tex]\Delta L = (1.0\cdot 10^{-5})(3)(11)=0.00033 m = 0.33 mm[/tex]

Which means that the safety gap between two successive bars must be 0.33 mm.

Learn more about temperature:

brainly.com/question/1603430

brainly.com/question/4370740

#LearnwithBrainly

Which phase of the moon is represented by position 4?

A. New moon

B. First quarter

C. Waxing gibbous

D. Waning gibbous

Answers

Answer:

Its C waxing gibbous

Explanation:

Define self-actualization.

Answers

Answer:the realization or fulfillment of one's talents and potentialities, especially considered as a drive or need present in everyone.

Explanation:

your welcome

Answer:

the realization or fulfillment of one's talents and potentialities, especially considered as a drive or need present in everyone.

Explanation:

In other words, for our purposes, self-actualization can be thought of as the full realization of one’s creative, intellectual, or social potential.

BE QUICK I DONT HAVE TIME MY TEACHERS HERE !!!
What helped provide support for the Plate Tectonic theory in the 1960s?

A)Shape of the continental coastlines matching up together
B)Mineral and fossil matches from tests done on different continents

Answers

Answer:

A) Shape of Continental coastlines matching up together

Explanation:

It helped provide evidence for how the plates moved. Answer B could be right, but the moving of the plates helped provide evidence as to why we were finding similar fossils on different countries so it's almost opposite

an electrical iron box having power 400w is operated in 10hours. what will be the energy consumed by the device in commercial unit?

Answers

Answer:

4 kWh or 4 units

Explanation:

energy = power × time

            = 400 W×  10 h

            = 4000 Wh

           =( 4000/ 1000 )  kWh

            = 4 kWh

             = 4 commercial units

For an object that is speeding up at a constant rate in the positive direction,
what does the velocity vs. time graph look like?
A. A horizontal line, not on the x-axis.
B. A line angled upward
C. A graph curving upward
D. A horizontal line on the x-axis

Answers

Answer:

B. A line angled upward

Explanation:

velocity is plotted along y- axis and time is plotted along x- axis so we get a line angled upward

what is common between transverse waves and longitudinal waves

Answers

It travels faster at higher temperature. Longitudinal wave is a wave in which the vibration of the particles travels in the parallel direction to the propagation of wave. Therefore, the common characteristic between transverse wave and longitudinal is both move faster at higher temperature.

Transverse waves and longitudinal waves are both types of mechanical waves that propagate through a medium.

What is wavelength?

Wavelength is a fundamental property of waves, including electromagnetic waves like light and radio waves, as well as other types of waves, such as sound waves or water waves.

One commonality between transverse and longitudinal waves is that they both involve the transfer of energy through a wave. In both cases, the energy is carried by the disturbance of the medium, whether it is a series of crests and troughs in a transverse wave or a series of compressions and rarefactions in a longitudinal wave.

Another commonality is that both types of waves can exhibit properties such as reflection, refraction, diffraction, and interference. These phenomena occur as the wave interacts with boundaries, obstacles, or other waves, and they can affect the behavior and properties of the wave.

Learn more about wavelength here:
https://brainly.com/question/13533093
#SPJ6

Starting from rest, Christina experiences 24.5 m/s2 of acceleration to take off from an aircraft carrier for 5 seconds. How long does the runway need to be? Round to the nearest meter.

Answers

Answer:

The length of the runway to the nearest meter is 306 m.

Explanation:

Given:

Initial velocity of Christina is, [tex]u=0\ m/s(Rest)[/tex]

Time taken is, [tex]t=5\ s[/tex]

Acceleration experienced by Christina is, [tex]a=24.5\ m/s^2[/tex]

The length of the runway is, [tex]d=?[/tex]

Now, we use Newton's equation of motion that relates the distance, initial velocity, time and acceleration.

So, we have the following equation of motion:

[tex]d=ut+\frac{1}{2}at^2[/tex]

Plug in all the given values and solve for 'd'. This gives,

[tex]d=0+\frac{1}{2}\times 24.5\times 5^2\\\\d=\frac{1\times 24.5\times 25}{2}\\\\d=\frac{612.5}{2}\\\\d=306.25\approx 306\ m(\textrm{Rounding to nearest meter})[/tex]

Therefore, the length of the runway to the nearest meter is 306 m.

The scientific method is? (apex)
A. The method used to review conclusions

B. How scientists come up with ideas

C. The procedure scientists use to gain knowledge about the physical universe

D. The method used by scientists to measure quantities

Answers

Answer:

C. The procedure scientist use to gain knowledge about the ohysical world

Explanation:

The correct answer is C. The procedure scientists use to gain knowledge about the physical universe.

Explanation:

The scientific method is a non-linear procedure used to answer questions about specific phenomena or understand the world. This method includes a set of steps that are used to create a hypothesis and then tested it successfully. Besides this, the scientific method is applied in most areas related to science because through this scientist can explain or understand the physical universe. According to this, the scientific method can be best described as "The procedure scientists use to gain knowledge about the physical universe".

Find the resistance of an iPhone battery if it is a 5.0V charger at 2.1 A

Answers

Answer:

2.38Ω

Explanation:

We are given;

Voltage as 5.0 V Current as 2.1 A

We are required to calculate the resistance of the iPhone battery;

According to Ohm's law, the current through a conductor is directly proportional to the potential difference at constant temperature and pressure.That is; V = IR Rearranging the formula;

R = V/I

Therefore;

R = 5.0 V ÷ 2.1 A

  = 2.38 Ω

Thus, the resistance of the iPhone battery is 2.38Ω

For the resistance of an iPhone battery connected to a 5.0V charger at 2.1A, you can use Ohm's Law to calculate the resistance as approximately 2.38 ohms.

The resistance of a battery is determined using Ohm's Law, where resistance (R) equals voltage (V) divided by current (I). In this case, a 5.0V charger at 2.1A results in a resistance of 2.38 ohms.

The velocity of sound in air at 300C is approximately :

Answers

The velocity of sound in at 300C is 511.3 m/s.

Explanation:

The equation that gives the speed of sound in ar as a function of the air temperature is the following:

[tex]v=(331.3+0.6T) m/s[/tex]

where

T is the temperature of the air, measured in Celsius degrees

In this problem, we want to find the speed of sound in ar for a temperature of

[tex]T=300^{\circ}C[/tex]

Substituting into the equation, we find:

[tex]v=331.3 + 0.6(300)=511.3 m/s[/tex]

So, the velocity of sound in at 300C is 511.3 m/s.

Learn more about sound waves:

brainly.com/question/4899681

#LearnwithBrainly

Final answer:

The velocity of sound in air at 30°C is approximately 349 m/s, calculated using the temperature-dependent formula v = 331.4 m/s + 0.6T.

Explanation:

The velocity of sound in air increases with the rise in temperature. At 0°C, sound travels at 331 m/s, and this velocity increases by about 0.6 m/s for each degree Celsius increase in temperature. Given that the temperature is 30°C, we can calculate the speed of sound using the formula v = 331.4 m/s + 0.6T, where T is the temperature in Celsius. Plugging the value of 30°C into the formula gives us v = 331.4 m/s + (0.6 × 30), which equals approximately 349 m/s as the velocity of sound in air at 30°C.

Other Questions
The incidence of breast cancer varies depending on a woman's age. The National Cancer Institute gives the following probabilities for a randomly chosen woman in her 40s who takes a mammography to screen for breast cancer:What percent of women in their 40s taking a screening mammography receive a positive test result?a. 97%b. 13.96%c. 11.68%d. 2.28%If a randomly chosen woman in her 40s taking the mammography screening test gets a positive test result, the probability that she indeed has breast cancer is the positive predicted value, PPV = P(Cancer | Positive test). The PPV for this age group isa. 0.8368.b. 0.1632.c. 0.85.d. 0.0268. If James borrows $4,200 to pay his college tuition. He signs a 5 year simple interest loan. If monthly payments are $78.40, what is the interest rate on the loan? __________________ is the income (wages and other ""earned"" and ""un-earned"") that Households receive before income taxes are taken out.. How long is the recommended time for a warm-up?A. 1 to 5 minutesB. 5 to 10 minutesC. 10 to 15 minutesD. 15 to 20 minutes Fabian was finding it difficult to acquire a credit card that would suit his needs. He checked his credit report to determine why he was facing these difficulties. What would have had a negative impact on Fabians credit score and brought it down?A. paying bills on timeB. paying mortgages installments on timeC. not having any overdraftsD. irregular and missed loan paymentsE. purchasing multiple household items The lease receivable amount includes the present value of a. rental payments only. b. rental payments plus the present value of the guaranteed residual value only. c. rental payments plus the present value of guaranteed and unguaranteed residual values. d. rental payments plus the present value of the unguaranteed residual value only. If your dog normally lives outside your home, which of the following preparedness activities offers the most practical protection when winter storms threaten? a) Expand the dog house to a larger size so it can hold more heat.b) Heat dog houses with electric blankets and space-heaters.c) Insulate dog houses and put straw inside.d) Allow the dog to sleep on the floor in the garage. Which of the following items is included in the Campus Sexual Assault Survivors Bill of Rights? A dog, that has a mass of 16 kgs, runs across a yard. What is the average force applied to the dog from the ground as it runs across the yard? You want to equip yourself with FRUs for a laptop. What would you take with you? (Choose two)A. RAMB. SD card readerC. Video cardD. NICE. Hard drive A charity organization had a fundraiser where they sold each ticket for a fixed price. After selling 200 tickets, they had a net profit of 12,000. They had to sell a few tickets just to cover necessary production costs of 1,200. A 2550 gram box is pushed across the floor with a net force of 18 .0 N.What is the acceleration of the box across the floor? what is 7/4 times 10 Planning, Revenue and Taxation, and RegulationMany Planning workers have college degrees, but some only have high school degrees. Examples of qualifications include math, design, research, and planning skills.Revenue and Taxation workers usually have postsecondary education, such as bachelors degrees. Qualifications include independence, integrity, and expertise in finance and tax law.Regulation worker education varies from high school to college degrees. Examples of qualifications include specialized subject knowledge, stress-management skills, teamwork skills, and dependability. Which graph shows the system of equations 4x+y=3 and 2x-3y=3? The side of the base of a square prism is increasing at a rate of 5 meters per second and the height of the prism as decreasing at a rate of 2 meters per second. At a certain instant, the base's side is 6 meters and the height is 7 meters. What is the rate of change of the volume of the prism at that instant fin cubic meters per second? a. 348 b. 492c. -492 d. 318 The volume of a square pnsm with base side s and neignth is s h. I WILL GIVE YOU A BRILLIANTJessica's hamster cage is shaped like a rectangular prism. The cage has a height of 24 inches and a volume of 6,480 cubic inches. Jessica puts a piece of paper on the bottom of the cage. The paper fits the bottom of the cage perfectly.What is the area of the paper on the bottom of the cage?Enter your answer in the box. in NEED ANSWER NOW PLZ!!Carbon-14 undergoes radioactive decay in the reaction above. Determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.A)Alpha radiation is emitted in this equation because the atomic number increases (from 6 to 7). This means a helium atom has been emitted from the nucleus.B)Beta radiation is emitted in this equation because the atomic number increases (from 6 to 7). This means a neutron has decayed into a proton, which occurs by emitting an electron.C)Beta radiation is emitted in this equation because the atomic number increases (from 6 to 7). This means a neutron has decayed into a electron, which occurs by emitting an proton.D)Gamma radiation is emitted in this equation because the atomic number increases (from 6 to 7). This means a neutron has decayed into a proton, which occurs by emitting an electron. Which of the following major discoveries was not made near or after World War II? the extensive ranges of mountain chains on the sea floor the absence of rocks older than 200 million years on the sea floor deep focus earthquakes that occur in some regions of the earth rift valleys in Africa 18 g of copper is mixed with silver nitrate in water. How much copper ll nitrate will formed? Steam Workshop Downloader