Answer: B. The last quarter. Half of the moon's surface will be visibly illuminated.
Answer:
B. Last Quarter
how is acceleration related to force when mass is constant , according to Newton’s second law of motion
Final answer:
Acceleration is directly proportional to force when mass is constant, according to Newton's second law of motion, which can be represented by the formula F = ma.
Explanation:
According to Newton's second law of motion, when the mass is constant, acceleration is directly proportional to the force applied to a system. In simpler terms, if you apply more force to an object of constant mass, its acceleration will increase. Conversely, if you apply less force, the acceleration decreases. Newton's second law can be expressed with the formula F = ma, where F stands for force, m for mass, and a for acceleration.
This relationship implies that for a given mass, the acceleration is always in the same direction as the force applied. If you push an object forward, it will accelerate forward. When the mass of the system does not change, the equation simplifies the understanding of how force affects the system's motion. The constant mass ensures that any change in force results in a proportional change in acceleration.
Ariana is accelerating her car at a rate of 4.6 m/s2 for 10 seconds. Her starting velocity was 0 m/s.
What was her final velocity?
0 m/s
2.3 m/s
4.6 m/s
46 m/s
The final velocity of the car is 46 m/s
Data obtained from the question Acceleration (a) = 4.6 m/s²Time (t) = 10 sInitial velocity (u) = 0 m/sFinal velocity (v) =?How to determine the final velocity
The final velocity of the car can be obtained as follow:
v = u + at
v = 0 + (4.6 × 10)
v = 0 + 46
v = 46 m/s
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Explain how refraction and prisms work.
Final answer:
Refraction is the bending of light as it passes from one medium to another, and it is pronounced in a prism, where light is separated into its constituent colors through dispersion. Prisms utilize the law of refraction to create a spectrum of colors, as each color is refracted differently based on its wavelength.
Explanation:
Refraction occurs when light enters a new transparent medium and is bent either towards or away from the line perpendicular to the boundary surface. This bending is due to a change in the speed of light as it moves from one medium to another, such as from air into glass. When light passes through a prism, a triangular piece of glass with refracting surfaces, this effect is seen clearly.
The separation of light into different colors is termed dispersion, and it happens because not all colors are bent by the same amount. The deviation of each beam of light depends on its wavelength and the properties of the refracting material. In a prism, violet light is bent more than red light, resulting in the formation of a rainbow spectrum.
The law of refraction, or Snell's law, explains the change in direction of the light rays when they enter a medium with a different index of refraction. According to Huygens's principle, each point of a wavefront acts as a new source of wavelets, which spread out in the second medium at a slower speed, thus bending the wavefront. Prisms use this principle to not only divert but also break up light into its constituent colors, leading to the beautiful dispersion effect observed.
The _____ law of thermodynamics states that two objects in thermal equilibrium will have no net heat flow between them. zeroth first second
Answer:
THE ZEROETH LAW
Explanation:
IM JUST TO SMART FOR THIS SHIIIIIIIII
Answer:
ZEROTH
Explanation:
odyssey
Before coming to school, Angela used electrical energy to warm her breakfast, light up a room, and charge her cell phone. Which statement about electrical energy is true? * 1 point If the charged particles are moving, electrical energy is a type of kinetic energy. If uncharged particles are moving, electrical energy is a type of potential energy. If the charged particles are not moving, electrical energy is a type of kinetic energy. If the charged particles are moving, electrical energy is a type of potential energy.
Answer:
If the charged particles are moving, electrical energy is a type of kinetic energy
Explanation:
This is because the electrical energy converted to kinetic energy of the charges. If q is the magnitude of the charge and V the electric potential it passes through, if it has a mass, m, it will develop a speed, v due to kinetic energy given by
qV = 1/2mv²
v = √(2qV/m)
In order for an open switch to cause a short circuit, the switch must be connected
Final answer:
An open switch causes an open circuit and prevents current flow, not a short circuit. A short circuit occurs when a low-resistance pathway inadvertently connects the two sides of a voltage source, causing excessive current flow.
Explanation:
An open switch in an electrical circuit represents a discontinuity where no current can flow, effectively having a value of 0, while a closed switch allows current to pass through, having a value of 1. However, an open switch cannot cause a short circuit because a short circuit occurs when there is a low-resistance pathway connecting the two sides of a voltage source, which bypasses the normal load in a circuit. Instead, an open switch leads to an open circuit, where there is a break or gap preventing electrical flow. A short circuit may happen in a scenario where a piece of wire or another conductor inadvertently connects the two sides of a voltage source, causing a large current to flow and potentially overheating the wire.
In the case of holiday lights mentioned in the question, each bulb has a shunt that allows current to flow around the bulb, creating a temporary short circuit when the bulb burns out. This mechanism ensures the rest of the lights stay on. However, if too many bulbs burn out, the shunts themselves can fail (open), causing a section of the string to go dark because the circuit has been interrupted.
The ammeter displays a reading of 0.10 A. Calculate the potential difference across the 45 Ω resistor.
The potential difference across the 45 Ω resistor is 4.5 V.
Explanation:The potential difference across the 45 Ω resistor can be calculated using Ohm's Law, which states that V = I * R, where V is the potential difference, I is the current, and R is the resistance. In this case, the current is 0.10 A and the resistance is 45 Ω.
Plugging these values into the formula, we get V = 0.10 A * 45 Ω = 4.5 V.
Therefore, the potential difference across the 45 Ω resistor is 4.5 V.
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A cell phone weighing 80 grams is flying through the air at 15 m/s. What’s is it’s kinetic energy
Answer:
The kinetic energy of the cell phone is 9J
Explanation:
The kinetic energy is the energy possessed by a body by virtue of motion.
The kinetic energy is expressed as
KE= 1/2m(v)²
Given data
Mass of cell phone m= 80g--to kg=80/1000= 0.08kg
Velocity of cell phone v= 15m/s
Substituting our given data we have
KE= 1/2*0.08(15)²
KE= (0.08*225)/2
KE=18/2
KE= 9J
What are beats? Physics B
Beats are a garden plant with thick leaves and a rounded red root.
The rounded red root of the plant is eaten as a vegetable.
Which event occurs after erosion of earth's surface
Answer:
Surface material breaks down into smaller pieces
Explanation:
The event that occurs after erosion is that very dense particles settle faster than low-density particles.
The term erosion refers to the washing away of top soil. Erosion may be caused by;
WindWaterIn both cases, land is rendered unfit for agricultural purposes hence every method must be employed to avoid erosion.
The event that occurs after erosion is that very dense particles settle faster than low-density particles.
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x=3t^2-12t+5 calculate time t=1 and time when velocity zero
what tectonic feature lies along chinas chinas eastern border
Answer: transform fault
Explanation: Transform faults are major tectonic features affecting the lithosphere and constitute strike- slip plate boundaries
The border of thickness change of Eastern China lithosphere is located west to recent gravity. It lies along the tectonic boundary between the Huaiyu-Tianmu mountains passive . is principally a part of the Eurasian plate, but the margins of the Indian and Philippine Sea plates are involved in the Himalayas and in the Coastal Range of Taiwan, respectively.
A dart with a mass of 0.5kg is thrown at 15m/s and sticks into a 1kg apple hanging on a string. What is the velocity of the dart and apple just after the dart is embedded?
with solution please :((
Answer:
5m/s
Explanation:
From momentum conservation:
Momentum =mass × veloclty
Momentum before collision = momentum after collision
Given that mass of dart = 0.5kg, mass of apple = 1kg, velocity of dart = 1.5m/s, velocity of apple = 0m/s
(0.5×1.5)- (1×0) = ( 0.5+1)v
7.5-0 = 1.5v
7.5 = 1.5v
V = 7.5/1.5
V = 5m/s.
velocity of the dart and apple just after the dart is embedded is 5m/s
The problem is solved using the principle of conservation of momentum. The total momentum before the collision is equal to total momentum after, which allows us to calculate the velocity of apple and dart together after the collision as 5 m/s.
Explanation:This problem involves the concept of conservation of linear momentum. In an isolated system where no external forces are acting (like this dart and apple situation), the total linear momentum before the collision is equal to the total linear momentum after the collision.
We are given that the dart (0.5kg) was moving at 15 m/s and the apple (1kg) was at rest, the initial total momentum before the collision would be the momentum of dart (since apple was at rest) = mass of dart x velocity of dart = (0.5kg)(15m/s)=7.5kg.m/s.
After the collision, both the dart and the apple move together with a new velocity v. The final total momentum is the sum of the momentum of apple and dart = total mass x velocity = (1kg + 0.5kg) x v .
Thus, our equation based on the principle of momentum conservation would be: (mass of dart x initial velocity) = (total mass x final velocity), or 7.5kg.m/s = 1.5 kg * v. Solving for the new velocity (v), we get v = 7.5kg.m/s / 1.5kg =5 m/s.
So, the velocity of the dart and the apple just after the dart is embedded would be 5 m/s.
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Use the drop-down menu to complete the statement. Based on the field lines, the electric charges indicated by the question marks are .
Answer: The same
Explanation: I just did it on Edg
Answer:
the same
Explanation: got it right on edge
A proton moving to the right enters a uniform 0.25 T magnetic field region. The proton moves in a clockwise circle in the plane of the page with a tangential speed of 2.8 x
105 m/s.
What is the direction of the magnetic field?
A) Right
B) Left
C) Into the page
D) Out of the page
E) Upwards
Answer:
According to the right-hand rule, the magnetic field is into the page.
Explanation:
According to the right-hand rule, the magnetic field is into the page. According to this rule, if the middle finger points in the direction of initial motion of the charge as it enters the magnetic field to the right, and point the thumb and index finer perpendicular to each other and the middle finer perpendicular to the index finer. We then point the middle finger to the right in the direction of motion of the proton. If we are to have a clockwise force on the proton in the plane of the page, the thumb must point parallel to the page, downwards towards the south. The direction of the index finger is thus the direction of the magnetic field, and this is into the page.
What is the acceleration of a 3 kg rock that is thrown with a force of 18 N?
Answer:6m/s^2
Explanation:
Mass =3kg
Force=18N
Acceleration =force ➗ mass
Acceleration =18 ➗ 3
Acceleration =6
Acceleration =6m/s^2
Final answer:
The acceleration of a 3 kg rock thrown with a force of 18 N is 6 m/s², calculated using the formula a = F/m.
Explanation:
The acceleration of a 3 kg rock that is thrown with a force of 18 N can be calculated using Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma).
Therefore, to find the acceleration (a), we can rearrange this formula to a = F/m.
Applying this to the problem at hand, if the force (F) is 18 N and the mass (m) of the rock is 3 kg, the acceleration (a) would be:
a = F/m = 18 N / 3 kg
= 6 m/s²
A thin, uniform, metal bar, 3 m long and weighing 90 N , is hanging vertically from the ceiling by a frictionless pivot. Suddenly it is struck 1.6 m below the ceiling by a small 4-kg ball, initially traveling horizontally at 12 m/s . The ball rebounds in the opposite direction with a speed of 5 m/s. Find the angular speed of the bar just after the collision? Why linear momentum not conserved?
Angular speed after collision: approximately 0.285 rad/s. Linear momentum not conserved due to external force.
To find the angular speed of the bar just after the collision, we can use the principle of conservation of angular momentum.
Before the collision, the system (bar + ball) has zero angular momentum because both the bar and the ball are stationary relative to the pivot point.
After the collision, the angular momentum of the system is conserved. We can write:
[tex]\(I_1\omega_1 + mvr = I_2\omega_2\)[/tex]
where:
[tex]- \(I_1\) is the moment of inertia of the bar about the pivot point before the collision,[/tex]
[tex]- \(I_2\) is the moment of inertia of the bar about the pivot point after the collision,[/tex]
[tex]- \(\omega_1\) is the initial angular speed of the bar,[/tex]
[tex]- \(\omega_2\) is the final angular speed of the bar,[/tex]
[tex]- \(m\) is the mass of the ball,[/tex]
[tex]- \(v\) is the velocity of the ball, and[/tex]
[tex]- \(r\) is the distance from the pivot point to the point where the ball strikes the bar.[/tex]
Given that the bar is hanging vertically, its moment of inertia about the pivot point is [tex]\(I = \frac{1}{3}ml^2\), where \(m\) is the mass of the bar and \(l\)[/tex] is its length. Substituting the given values:
[tex]\(I_1 = \frac{1}{3}(90\, \text{N})(3\, \text{m})^2 = 270\, \text{kg m}^2\)[/tex]
The moment of inertia of the bar does not change after the collision because no external torque is applied. So [tex]\(I_1 = I_2\).[/tex]
The distance from the pivot point to the point where the ball strikes the bar is [tex]\(r = 1.6\, \text{m}\).[/tex]
Substituting the values into the conservation of angular momentum equation:
[tex]\(270\omega_1 + (4\, \text{kg})(12\, \text{m/s})(1.6\, \text{m}) = 270\omega_2\)[/tex]
Solving for [tex]\(\omega_2\):[/tex]
[tex]\(270\omega_1 + 76.8 = 270\omega_2\)[/tex]
Now, we need to find [tex]\(\omega_1\). Since the bar is initially at rest, \(\omega_1 = 0\).[/tex]
[tex]\(0 + 76.8 = 270\omega_2\)[/tex]
[tex]\(\omega_2 = \frac{76.8}{270} \, \text{rad/s} \approx 0.285\, \text{rad/s}\)[/tex]
So, the angular speed of the bar just after the collision is approximately [tex]\(0.285\, \text{rad/s}\).[/tex]
As for why linear momentum is not conserved, it's because an external force (the impact of the ball) is acting on the system. Linear momentum is only conserved in a system where there are no external forces acting on it. In this case, the collision between the ball and the bar introduces an external force, causing linear momentum not to be conserved.
The angular speed of the bar just after the collision is approximately 3.94 rad/s. Linear momentum is not conserved in this situation due to external forces acting on the system, such as gravity and the pivot support force. Angular momentum is conserved because these external forces don't exert torques around the pivot point.
To solve this problem, we need to consider the conservation of angular momentum. we first evaluate the change in angular momentum of the ball. Then, we find the moment of inertia (I') of the pivot. since the principle of conservation of angular momentum states that the change in angular momentum of the ball is equal to the angular momentum of the bar, we can use this to calculate the angular speed of the bar.
The ball strikes the bar at a point 1.6 m below the ceiling, so the distance from the pivot point is 1.6 m.
The initial angular momentum of the ball: L₁ = m₁ × v₁ × r = 4 kg × 12 m/s × 1.6 m = 76.8 kg·m²/s
The final angular momentum of the ball: L₂ = m₁ × v₂ × r = 4 kg × (-5 m/s) × 1.6 m = -32 kg·m²/s
Net change in angular momentum of the ball: ΔL = L₁ - L₂ = 76.8 kg·m²/s - (-32 kg·m²/s) = 108.8 kg·m²/s
The moment of inertia of the bar about the pivot is: I' = (1/3) × M × L² = (1/3) × (90 N / 9.8 m/s²) × (3 m)² ≅ 27.6 kg·m²
Using conservation of angular momentum:
ΔL = I' × ω' where ω' = angular speed of the bar
⇒ 108.8 kg·m²/s = 27.6 kg·m² × ω'
Therefore, the angular speed of the bar, ω' ≅ 3.94 rad/s
The reason why angular momentum is not conserved is because there are external forces (such as gravity and the pivot support force) acting on the system. These forces exert impulses during the collision, affecting the linear momentum but not the angular momentum.
In an experiment, 50 g of each material were placed in a calorimeter with the same starting water volume and temperature. Which is the best interpretation of the chart? Lead has the highest specific heat of the four materials shown. The energy transferred and type of material are inversely proportional to each other. Different materials have different abilities to transfer energy. Mass and type of material are proportional.
Answer:it’s different materials have different abilities to transfer energy.
Explanation:
Just took it.
Answer:
its c
Explanation:
i got it right on edu
A petrol engine that transforms 1000J of chemical potential energy into 300J of kinetic energy, and 700J into wasted heat and sound energy. Calculate the Efficiency. Tysm ppl
Answer:
Efficiency = 30% = 0.3
Explanation:
The general formula for efficiency of a device is given as:
Efficiency = (Desired Output/ Input) * 100%
Here, in our case, we have a petrol engine as a device. So, we analyze it for the efficiency calculations. Here, we have:
Chemical Potential Energy = 1000 J
Kinetic Energy = 300 J
Heat and Sound Energy = 700 J
Now, we know that the desired output of a car or the purpose of a car is to provide Kinetic energy, while all other forms of energy such as heat and sound energies are produced as waste. And the chemical energy is provided to car as input, in form of fuel. Therefore,
Input = Chemical Potential Energy = 1000 J
Desired Output = Kinetic Energy = 300 J
Therefore,
Efficiency = (300 J/1000 J) * 100%
Efficiency = 30% = 0.3
The efficiency is 30% or 0.3
Calculation of an efficiency:Since petrol engine that transforms 1000J of chemical potential energy into 300J of kinetic energy, and 700J into wasted heat and sound energy.
So,
We know that
Efficiency = (Desired Output/ Input) * 100%
Here
Input = Chemical Potential Energy = 1000 J
Desired Output = Kinetic Energy = 300 J
So,
Efficiency = (300 J/1000 J) * 100%
= 30%
= 0.3
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What electromagnetic waves are used in transmitting data from remote controls to televisions?
Radio Waves
Microwaves
Infrared Waves
X-ray
Answer:
Radio waves
Explanation:
Radio waves have the lowest frequency and are the least harmful to humans and animals so they are used in tv remotes, cell phones and anything that transmits data.
Answer:
It's infrared waves
Explanation:
If someone weighs 1,059 N, what is their mass
Answer:
mass=weight/gravitational acceleration
mass=1.059/10=105.9
The voltage in a circuit can be determined from the ____, total resistance, and capacitance
The voltage in a circuit can be determined from the current, total resistance, and capacitance. The correct option is D.
What is current?The current is the stream of charges flowing from the positive terminal of the voltage source to the its negative terminal.
A simple circuit consists of a voltage source or battery and resistance, current will flow when connected. But, if circuit has capacitance and resistance, the current will flow from the circuit.
Thus, the voltage in a circuit can be determined from the current, total resistance, and capacitance. The correct option is D.
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Scientists around the world have been working for decades on perfecting the process of
nuclear fusion in the lab. Which statement justifies this research?
Answer:
Scientists are looking for a way to create cheap, safe, and sustainable energy.
Nuclear fusion is the process by which two atoms rapidly collide at each other forming a new nucleus. The energy of colliding and synthesizing has intrigued scientist into believing that this could be one of best sources of renewable energy.Explanation:
Answer:
d
Explanation:
e2020
A small rock lies on a slope near a tropical sea. What are three ways that the rock could be eroded?
1. During a rockfall, the rock could be carried down the slope.
2. Frost wedging could cause cracks in the rocks.
3. The heat of the sun could break down the rock.
4. Tall, powerful waves could carry the rock into the ocean.
5. The rock could react to seawater, break down, and be carried away by the sea.
Answer: For Plato students the correct answer is
#2. Frost wedging could cause cracks in the rocks.
#4. Tall, powerful waves could carry the rock into the ocean.
#5. The rock could react to seawater, break down, and be carried away by the sea.
Explanation: There were so many different answers given by everyone but this is the correct answer if you are on Plato
A sample of a radioactive elements must contain atoms
A.
with a stable nuclei
B.
with unstable nuclei
C.
in the excited state
D.
in the ground state
A radioactive element's sample must contain atoms with unstable nuclei, which undergo radioactive decay to achieve stability.
A sample of a radioactive element must contain atoms with unstable nuclei. Radioactive elements consist of isotopes whose nuclei have an imbalance in the number of protons and neutrons leading to an unstable configuration. This causes these nuclei to spontaneously emit particles or radiation in a process known as radioactive decay. During radioactive decay, an unstable isotope changes into a more stable isotope, often of a different element. Radioactive elements must contain atoms with unstable nuclei. These nuclei undergo radioactive decay, emitting particles to become a different nucleus. A nucleus with too few or too many neutrons will tend to undergo radioactive decay to achieve greater stability. Elements with atomic numbers above 92 are all synthetically produced and do not occur naturally on Earth—they are examples of artificial radioactivity.
A piece of wire having a resistance R is cut into five equal parts. (i) How will the resistance of each part of the wire compare with the original resistance? (ii) If the five parts of the wire are placed in parallel, how will the resistance of the combination compare with the resistance of the original wire? What w ill be ratio of resistance in series to that of parallel?
Answer:
i) R = R₀/ 5 , ii) Req = R₀ / 25, iii) R_series / R_parallel = 25
Explanation:
i) The resistivity of a metal is constant, therefore resistance is
R = ρ L / A
where we can see that cutting the resistance in 5 parts each part has
R = R₀/ 5
where R ose the original resistance.
ii) The equivalent resinification of a parallel resistance is
1 / Req = ∑ 1 / Ri
1 / Req = 5 1/ (R₀ / 5)
1 / Req = 25 / R₀
Req = R₀ / 25
to buy these values we find their relationship
R₀ / [tex]R_{paralel}[/tex] = 25
iii) the series resistance is
Req = 5 Ri
q = 5 (Ro / 5)
Req = Ro
the relationship between resistance in being and parallel is
R_serie / R_parallel = R₀ / (R₀ / 25)
R_series / R_parallel = 25
During spring tide, the sun, earth, and moon are in a straight line. This causes ...............
Answer:
This causes higher average tidal ranges. The gravitational pull of the Sun and moon on Earth combined cause high tides that will be higher and low tides that will be lower than average.
Mitosis and Meiosis Lab HELP PLEASE
In your own words, summarize the steps you took to complete the lab.
Answer:
06.04 Mitosis and Meiosis
Instructions: In the Mitosis and Meiosis lab, you investigated sexual and asexual reproduction as well as the processes of cellular division by mitosis and meiosis. Record your observations in the lab report below. You will submit your completed report.
________________________________________
Name and Title:
Mitosis and Meiosis Lab Report.
Objective(s):
To learn and explore what mitosis and meiosis is and what they do.
Hypothesis:
Record your predictions during the zoo tour section of the lab in the data chart.
Procedure:
First, go into the mitosis and meiosis cycles. Then look at what happens when a sex cell from a female tiger is combined with a sex cell from a male tiger. Then investigate what happens when two starfish reproduce asexually. Then write down the predictions about how each organism will replicate. Then, keep track on whether or not the forecast was right.
Data:
Record your data from the zoo tour in the data chart below. Be sure to fill in the chart completely.
Zoo Organism Reproduction Prediction
(sexual, asexual, or both) Reproduction Result
(sexual, asexual, or both)
Elephant - Sexual, Sexual
Whiptail lizard - Asexual, Asexual
Parrot - Sexual, Sexual
Redwood tree - Both, Both
Amoeba - Asexual, Asexual
Jellyfish - Asexual, Both
Conclusion:
Your conclusion will include a summary of your lab results and an interpretation of the results. Please write in complete sentences.
1. List one-way mitosis and meiosis are the same and one way they are different.
Meiosis has 2 cell divisions, but mitosis has just one cell division. Since the parent cell develops diploid cells, meiosis I is the same as mitosis. The distinction between meiosis and mitosis is that after the whole process, meiosis produces genetically distinct haploid daughter cells, while mitosis produces genetically identical diploid daughter cells.
2. What is one advantage and one disadvantage of sexual reproduction?
The greatest benefit of sexual reproduction is that it aids in the development of offspring that are well suited to environmental environments due to genetic differentiation. As a result, the nation has a diverse range of descendants. The downside is that it needs two parents and takes longer than asexual reproduction.
3. What is one advantage and one disadvantage of asexual reproduction?
Asexual reproduction has the advantage of requiring only one parent, taking a short amount of time, and producing genetically identical offspring. The only drawback is that when there is a catastrophe, the mortality rate is poor due to the generation of genetically identical offspring.
4. Some living organisms are capable of both asexual and sexual reproduction. Explain how this can be an advantage.
To produce offspring, the organism may use either sexual or asexual reproduction. If it is difficult to find a mate, the living being will use asexual reproduction to produce offspring quickly. Sexual reproduction is possible because the individual requires genetically distinct offspring for survival.
In unicellular organisms, cell reproduction give rise to next generation and in multicellular organisms, cell division occurs. Mitosis and Meiosis are the two different forms of nuclear division. Cell division is a highly regulated process.
What is mitosis and meiosis?A type of cell division which results in the formation of four daughter cells each one with half the number of chromosomes as the parent cell is called the meiosis. In mitosis there occurs the formation of two daughter cells with the same number and kind of chromosomes as the parent cell.
In animals, meiosis only occurs in the cells that give rise to the sex cells (gametes), i.e, the egg and the sperm. In meiosis chromosomes not yet visible but DNA has been duplicated or replicated.
The term mitosis is used to describe the duplication and distribution of chromosomes, the structures that carry the genetic information. It is essential to life because it provides new cells for growth.
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The period of an ocean wave is 5 seconds. What is the wave's frequency?
Answer:
Frequency is the reciprocal of the period. The period is 5 seconds, so the frequency is 1/(5 s) = 0.20 Hz.
Explanation: yes
If 270 watts of power is used in 42 seconds, how much work is done? (Unit is joules (J), just type the number. Use commas if necessary).
Answer:
11340
Explanation:
Power = Work/time.
P = W/t ................ Equation 1
Make W the subject of the equation,
W = Pt.................. Equation 2
Given: P = 270 Watts, t = 42 seconds
Substitute these values into equation 2
W = 270(42)
W = 11340 J
Hence the work done is 11340
Answer:11340 J
Explanation: