One complete
orbit of the earth around the sun is 365 and ¼ days. Because of this, the earth
has to completely orbit around the sun in respect to the stars too no the sun
only and so the earth spins 366.26 times every rotation. The ratio of
the earth's orbital period about the sun to the earth's period of rotation
about its own axis will then be 1 is to
366.26.
Final answer:
The ratio of the Earth's orbital period about the sun to its period of rotation about its axis is 365.26:1.
Explanation:
The ratio of the earth's orbital period about the sun to the earth's period of rotation about its own axis is 365.26 days to 1 day.
This means it takes approximately 365.26 days for the Earth to orbit the Sun once, while it takes 1 day for the Earth to complete one full rotation about its axis.
Therefore, the ratio can be simplified to 365.26:1.
Which of these statements best describes the difference between electromagnetic and gravitational forces in the solar system?
a. Electromagnetic forces have a shorter range than gravitational forces.
b. Electromagnetic forces are stronger than gravitational forces.
c. Electromagnetic forces are only repulsive but gravitational forces are both attractive and repulsive.
d. Electromagnetic forces are only attractive but gravitational forces are both attractive and repulsive.
Answer:
Electromagnetic forces are stronger than gravitational forces.
Explanation:
Electromagnetic and gravitational forces both are fundamental forces present in nature. The force that exists between the charged particles are electromagnetic forces while the force that exists between two objects in the universe is called gravitational force.
The one of the difference between these two forces is that the gravitational force is always attractive while the electromagnetic force can be attractive or repulsive.
Electromagnetic forces are stronger than gravitational forces. It is approximate 10³⁹ times stronger than gravitational force. Hence, the correct option is (b).
If a tank filled with water contains a block and the height of the water above point A within the block is 0.6 meter, what's the pressure at point A? A. 7.84 kPa B. 3.85 kPa C. 9.80 kPa D. 5.88 kPa
If a tank filled with water contains a block and the height of the water above point A within the block, then the pressure will be equal to 5.88 Kpa. Hence, option D is correct.
What is Pressure?In the natural sciences, pressure is defined as the vertical unit area of force or even the strain at a particular location inside a confined fluid. The force multiplied by the area throughout which it is exerted, and one pound per square inch, determines the pressure that a 42-pound box with an 84-square-inch bottom will impose on a surface.
Atmospheric pressure, which is at sea level is roughly 15 pounds per square inch, is the amount of weight that the atmosphere exerts on each unit area of the Earth's surface.
As per the given information in the question,
ρ = 1000 kg/m³
g = 9.8 m/s²
h = 0.6 m
Use the formula of pressure,
p = ρ × g × h
p = 1000 × 9.8 × 0.6
p = 5880 Pa or,
p = 5.88 Kpa
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An important part of developing motivation includes understanding that motivation is influenced by your _____.
the answer is positive mindset : )
When you make a cell phone call, which type of electromagnetic wave is most likely transmitting the signal?
microwaves
A microwave is an electromagnetic wave with a wavelength in the range 0.001–0.3 m, shorter than a normal radio wave but longer than an infrared wave.
If 20 beats are produced within a single second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time
A. 38 Hz and 63 Hz
B. 18 Hz and 26 Hz
C. 47 Hz and 55 Hz
D. 22 Hz and 42 Hz
The correct choice is
D. 22 Hz and 42 Hz.
In fact, the beat frequency is given by the difference between the frequencies of the two waves:
[tex] f_B = |f_1 -f_2| [/tex]
In this problem, the beat frequency is [tex] f_B=20 Hz [/tex], therefore the only pair of frequencies that gives a difference equal to 20 Hz is
D. 22 Hz and 42 Hz.
A kite suspended in the sky is flowing back and forth. Which type of friction is being described?
Answer:
C.) Fluid Friction.
Explanation:
I had this question.
The nature of a volcanic eruption is determined largely by the ________ of the magma.
Answer:
Chemistry
Explanation:
The composition of magma, the temperature of magma and the amount of dissolved gasses in the magma are all responsible for the nature of eruption.
Magma could be composed of dust, blocks, bombs, cinders and other gases.
The nature of eruption also depends on the temperature as magma could erupt at varying temperatures from 700[tex]^{2}[/tex]C to 1300[tex]^{2}[/tex]C and even at higher temperatures reaching 1600[tex]^{2}[/tex]C.
By definition, work is a force that's applied over a specific
a. weight.
b. period of time.
c. amount of horsepower.
d. distance.
the answer for this one will be D.
Why are chemicals and hot objects never placed directly on the balance pan?
Final answer:
To prevent damage to the balance and ensure accurate measurements, hot objects and chemicals are not placed directly on the balance pan but rather in appropriate containers or on heat-resistant mats.
Explanation:
Chemicals and hot objects are never placed directly on the balance pan because it can cause damage to the balance and lead to inaccurate measurements. Such items can affect the balance's mechanisms and result in erroneous readings. Hot objects can also pose a safety hazard and may harm the operator. Additionally, they might leave residue or cause chemical reactions that could contaminate the balance, further skewing future measurements. Therefore, it is essential to use appropriate containers or heat-resistant mats when weighing hot or chemically active specimens on a double-pan mechanical balance.
The police department is very proud of their new police cars. They announced that they are able to go from a stopped position to 80 miles per hour in 6 seconds. They are describing their cars' velocity. direction. speed. acceleration.
Argelia has a stack of schoolbooks sitting in the backseat of her car. When Argelia makes a sharp right turn, the books slide to the left of the seat until they come to a rest against the car door. Explain why this happens.
Answer:
The books slide to the left due to inertia, and then they come to a rest due to the force applied by the car door.
Explanation:
The entire motion of the books can be explained by using the first two laws of Newton:
- 1st Newton's law (also called Law of Inertia): an object at rest stays at rest and an object in motion stays in motion with constant velocity if no unbalanced forces act on it
- 2nd Newton's law: when an object is acted upon unbalanced forces, an acceleration is induced in the motion of the object, according to the equation
[tex]F=ma[/tex]
where F is the net force on the object, m is its mass and a is its acceleration.
Coming back to our problem:
- At the beginning, Argelia makes a sharp turn right. Due to the law of inertia, the books (which are not fixed to the car) continue their motion straight as it was before the curve: so, since the car is moving right, they appear to go the left of the car.
- When the books hit the car door, they stop moving due to the 2nd Newton's law: in fact, the car door applies an unbalanced force against the books, and as a result the books have a negative acceleration (=deceleration), so they slow down and eventually they stop.
The books moved due to the force that was applied and they came to rest due to inertia.
Inertia simply means the tendency to do nothing or to be able to remain unchanged. It is the resistance of any object to any change in the velocity of the object.
The books moved due to the force that was applied and they came to rest due to inertia. The book will be at rest as long as there's no force that acted on them.
In this case, the sharp turn of the car resulted in a force that acted on the car.
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If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?
If an object has a mass of 20 grams its density in g/cm3 is [tex]0.5 g/cm^3[/tex]
What is density?The measure of how closely a material is packed together is called its density. The mass per unit volume is how it is defined. Density Formula: ρ = m/V, where ρ is the density, m is the object's mass, and V is its volume. Density Symbol:
[tex]density = \frac{mass}{volume}[/tex]
[tex]Density = \frac{20}{40}[/tex]
=[tex]0.5 g/cm^3[/tex]
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A bowling ball weighs 7.26 kg and takes 3.64 seconds to travel the 19.2 m length of the bowling alley. assuming the velocity is constant, what is the kinetic energy of the bowling ball?
The kinetic energy of the bowling ball is 100.81 J.
Given data:
The mass of bowling ball is, m = 7.26 kg.
The time interval is, t = 3.64 s.
The length of path covered is, L = 19.2 m.
First obtain the speed of ball from the given equation,
[tex]v = \dfrac{L}{t}[/tex]
Here, v is the speed of ball.
Solving as,
[tex]v = \dfrac{19.2}{3.64}\\\\v=5.27 \;\rm m/s[/tex]
Now, the expression for the kinetic energy is,
[tex]KE = \dfrac{1}{2}mv^{2}[/tex]
Solve by substituting the values as,
[tex]KE = \dfrac{1}{2} \times 7.26 \times 5.27^{2}\\\\KE=100.81 \;\rm J[/tex]
Thus, we can conclude that the kinetic energy of the bowling ball is 100.81 J.
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The kinetic energy of the bowling ball is approximately 100.81 Joules, which is calculated using the mass of the ball, the distance it covers, and the time it takes to cover that distance with constant velocity.
The student is asking for the kinetic energy of a bowling ball that has a given mass and travels a certain distance in a specified time with constant velocity. To solve this, we must first calculate the velocity of the ball using distance and time, then use this velocity to determine the kinetic energy.
Step 1: Calculate the velocity.
Velocity (v) = Distance (d) / Time (t)
v = 19.2 m / 3.64 s
v = 5.27 m/s
Step 2: Calculate the kinetic energy (KE). The formula for KE is
[tex]KE = \frac{1}{2} X m X v^2\\KE = \frac{1}{2} X 7.26 \ kg X (5.27 \ m/s)^2\\KE = 100.81 \ Joules[/tex]
Therefore, the kinetic energy of the bowling ball is approximately 100.81 Joules.
What is the ultimate source of energies for fossil fuels, solar cells and windmills?
A certain car is capable of accelerating at a rate of 10.60 m/s 2 . how long does it take for this car to go from a speed of 55 mi/h to a speed of 60 mi/h
Final answer:
To calculate the time required for a car to accelerate from 55 mi/h to 60 mi/h with an acceleration of 10.60 m/s², convert the speeds to m/s, then use the formula Δt = (ο - νi) / a to find that it takes approximately 0.2106 seconds.
Explanation:
The question involves calculating the time it takes for a car to accelerate from 55 miles per hour (mi/h) to 60 miles per hour (mi/h) given an acceleration rate of 10.60 meters per second squared (m/s2). First, convert the speeds from miles per hour to meters per second. One mile per hour is approximately 0.44704 meters per second. Therefore, 55 mi/h is about 24.5872 m/s, and 60 mi/h is about 26.8224 m/s.
To find the time (Δt) taken to accelerate from the initial speed (νi) to the final speed (ο), one can use the formula Δt = (ο - νi) / a, where a is the acceleration. Plugging in the given values, Δt = (26.8224 m/s - 24.5872 m/s) / 10.60 m/s2 = 0.2106 seconds. Therefore, it takes approximately 0.2106 seconds for the car to accelerate from 55 to 60 miles per hour.
Drive at a speed that is _____ and _______ at all times. this means showings careful or ______ judgment.
Creative Commons Attribution-Share Alike 3.0 Unported Look at the graph. Where P is price and Q is quantity, what might cause a move from B to A? Fewer workers are needed to manufacture the product. A nationwide discount program is implemented. New technologies make manufacturing more efficient. Two other firms open to manufacture the same product.
Which scientist first proposed physical laws to mathematically describe the effect of forces on the motions of bodies?
You are waiting to turn left into a small parking lot. a car approaching from the opposite direction has a turn signal on. you should _______________.
The average adult heart pumps about 84./mls of blood at 72 beats per minute. suppose you need to calculate how long it would take the average heart to circulate 6600.ml of blood.
The heart takes [tex]\boxed{79{\text{ s}}}[/tex] to circulate [tex]6600{\text{ mL}}[/tex] of blood.
Explanation:
The average rate of blood pumping by adult heart at rate of [tex]72[/tex] beats per minute is [tex]84{\text{ }}{{{\text{mL}}}\mathord{\left/{\vphantom{{{\text{mL}}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}[/tex] .
Our aim is to obtain the time required by heart to circulate [tex]6600{\text{ mL}}[/tex] of blood.
The rate [tex]84{\text{ }}{{{\text{mL}}}\mathord{\left/{\vphantom{{{\text{mL}}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}[/tex] can be referred as the adult heart pumps [tex]84[/tex] milliliters of blood in one second at the rate of [tex]72[/tex] beats per minute.
Consider [tex]t[/tex] be the time required for heart to pump [tex]6600{\text{ mL}}[/tex] blood.
Since, in one second the heart pumps [tex]84{\text{ }}{{{\text{mL}}}\mathord{\left/{\vphantom{{{\text{mL}}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}[/tex] and this can be written as,
[tex]84{\text{ mL}}\Rightarrow 1{\text{ second}}[/tex]
In [tex]t[/tex] second the heart will pump [tex]6600{\text{ mL}}[/tex] of blood and this can be written as,
[tex]6600{\text{ mL}}\Rightarrow t{\text{ second}}[/tex]
The value of [tex]t[/tex] is calculated as shown below.
[tex]\begin{aligned}t&=\frac{{6600{\text{ mL}}\times 1{\text{ second}}}}{{84{\text{ mL}}}}\\&=\frac{{6600}}{{84}}{\text{ seconds}}\\&=78.57{\text{ seconds}}\\&\approx 79{\text{ s}}\\\end{aligned}[/tex]
Therefore, it takes heart to circulate [tex]6600{\text{ mL}}[/tex] of blood in approximately [tex]79{\text{ s}}[/tex].
Since, blood can flow so it is called as fluids. Fluid has no fixed shape and having definite volume.
The expression for density for any fluid can be written as,
[tex]\rho=\frac{m}{V}[/tex]
Here, [tex]{{\rho }}[/tex] is density, [tex]m[/tex] is the mass of the fluid and [tex]V[/tex] is the volume of fluid.
Thus, the heart takes [tex]\boxed{79{\text{ s}}}[/tex] to circulate [tex]6600{\text{ mL}}[/tex] of blood.
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Answer Details:
Grade: High School
Subject: Physics
Chapter: Fluids
Keywords:
Heart, pumps, 84 mL/s, blood, 72 beats, minute, long, average , circulate, 79 s, 6600 mL, fluids, property, calculate.
If you are in a rear-wheel skid, you must release your brakes and turn your steering wheel __________
a. into the direction of the skid.
b. opposite direction of the skid.
c. straight.
Answer:
a) into the direction of the skid
Explanation:
Suppose you throw a ball vertically downward with a speed of 10 m/s. neglecting air friction, what would be the speed of the ball one second later?
Answer:
The speed of the ball one second later is 19.8 m/s.
Explanation:
Given that,
Initial speed of the ball, u = 10 m/s
Let v is the speed of the ball after one second. The ball will move downward under the action of gravity, a = g
Using the first equation of motion as :
[tex]v=u+at[/tex]
[tex]v=u+gt[/tex]
[tex]v=10+9.8\times 1[/tex]
v = 19.8 m/s
So, the speed of the ball one second later is 19.8 m/s. Hence, this is the required solution.
Why is the transverse spatial extent of a photon proportional to its wavelength which is a longitudinal quantity?
Piece of cake
Chocolate cake
In quantum mechanics, the uncertainty principle also known as "Heisenberg's uncertainty principle" is any of a variety of mathematical inequalities, asserting a fundamental limit to the precision with certain pairs of physical properties of a particle known as complimentary variables, such as position X and momentum P can be known.
What is the radius of a sphere with a surface area of 100πcm2? 10 cm 5 cm 25 cm 3 cm?
I think the answer is 5cm
You can find all the naturally occurring compounds on the periodic table. true or false
What principle of joint operations entails expending minimum essential combat power on secondary efforts in order to allocate the maximum possoble combat power on primary efforts?
"how do the fundamental laws of physics make manifest that space has 3 dimensions?"
An electrical motor spins at a constant 2035 rpm. if the armature radius is 5.862 cm, what is the acceleration of the edge of the rotor?
The acceleration at the edge of the rotor in the electrical motor spinning at a constant 2035 rpm with an armature radius of 5.862 cm is approximately 267476.4 m/s², found using the principles of centripetal acceleration in physics.
Explanation:To solve this question, we first need to convert the given motor speed from revolutions per minute (rpm) to radians per second, which is the SI unit for angular velocity. This is done by multiplying by 2π, which is the radian equivalent of one revolution, and dividing by 60, the number of seconds in a minute. In this case, our conversion gives us a value for the angular velocity ω of approximately 213.2 rad/s.
We then use the formula for centripetal acceleration: ac = rω². Here, r is the radius of the armature (0.05862 meters using SI units), and ω is the angular velocity we converted earlier. Computing these, we find the centripetal acceleration ac to be around 267476.4 m/s².
Therefore, the acceleration at the edge of the rotor in the electrical motor spinning at a constant 2035 rpm with an armature radius of 5.862 cm is approximately 267476.4 m/s².
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A silica-rich igneous rock that has large crystals and makes up much of the continental crust is ________
Final answer:
Granite is a silica-rich igneous rock with large crystals, playing a significant role in the composition of the continental crust due to its quartz and feldspar content. It is less dense than the oceanic crust, contributing to the elevation of continental crust.
Explanation:
A silica-rich igneous rock that has large crystals and makes up much of the continental crust is granite. Granite is a coarse-grained, felsic, intrusive rock, characterized by the presence of quartz, which indicates its silica-rich nature. Additionally, granite commonly contains large amounts of salmon pink potassium feldspar and white plagioclase crystals visible cleavage planes, making it a good approximation of the continental crust in terms of density and composition.
The composition of continental crust largely consists of various types of igneous, metamorphic, and sedimentary rocks, with granite playing a significant role due to its less dense characteristics compared to the mafic rocks of the oceanic crust. This relatively low density contributes to the continental crust rising higher on the mantle compared to the oceanic crust. Furthermore, quartz and feldspar, significant components of granite, are the two most abundant minerals in the continental crust, emphasizing granite's fundamental role in the structure of the Earth's crust.
A box is being pulled by two ropes. Eduardo pulls to the left with a force of 500 N, and Clara pulls to the right with a force of 200 N. The box moves because of the two forces applied to it. Leon records the forces and direction of the forces acting on the box in his lab notebook. In the table, which force has the wrong direction?
Tension by Eduardo
Tension by Clara
Kinetic friction
Gravity
Answer:
kinetic friction
Explanation: