When is energy destroyed? A. When heat is produced B. When an object slows down and eventually comes to rest C. When energy is transformed from kinetic energy to potential energy or from potential energy to kinetic energy D. Energy cannot be destroyed.

Q: Which of the following statements is true about potential energy for the given figure? point A point…

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Q: A 2.2 kg rock is held 10 meters above the ground and dropped. Using your knowledge of CONSERVATION…

A: Mass of rock (M) = 2.2 kg  Height of rock (H)  = 10 m  Acceleration due to gravity (g) = 10 m/s2

Q: An 80 kg object is dropped from rest from a height of  25 meters above the ground. Use the concept…

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Q: 84. When is work done on an object? a. when a net force acts on an object b. when the object moves…

A: The work done on an object is W=Fnetd≠0  if Fnet≠0

Q: 6. You notice that an object is moving from point A to point B. The object measures a kinetic energy…

A: Given data: The kinetic energy at A is KE=6.75 J. The speed at A is vA=4.25 m/s. The speed at B is…

Q: A skier is gliding down a gentle slope at a constant speed. What energy transformation is taking…

A: K denote kinetic energy.Ug denote gravitational potential energyEth denote thermal energy.Skier is…

Q: How much potential energy does a 7.5 kg ceiling fan have with respect to the floor when it is 3.0 m…

A: Given Data :mass of the ceiling fan m = 7.5 kgheight of ceiling fan with respect to floor h = 3 mlet…

Q: The statement that change in kinetic energy of a system is equal to the work done on the system by…

A: Concept used: Work done on a system is equal to difference of final and initial kinetic energy of…

Q: A 4000 gram object has a kinetic energy of 50 Joules. What is the speed of the object?     A. 5…

A: Given Data:- Mass of the object is  m=4000 g    =4000 g×1 kg1000 g    =4 kg Kinetic energy of the…

Q: A bungee jumper who is about to jump has her energy stored entirely as gravitational potential…

A: Initially the bungee jumper has her total initial energy stored as the gravitational potential…

Q: When a hybrid car brakes to a stop, much of its kinetic energy is transformed to A. Heat B. Work C.…

A: The correct option is (C) Explanation- whenever car stops the car use friction brakes which inhibit…

Q: A mass is hanging on a vertical spring and is orginally in equilibrium with the weight balanced by…

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Q: 15. A car is traveling to the right at 20 m/s, which gives it a kinetic energy, K. A second…

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Q: 11. Students are designing an experiment to identify the transformations between potential and…

A: Kinetic energy is given by,  EK=12mv2 Potential energy is given by,  EP=mgh

Q: A high-speed swimmer uses 120,000 � of energy in a half-minute race. Three quarters of the energy…

A: a) the one fourth of energy used to oppose the motion which is nothing but 120,000*(1/4) is equal to…

Q: The work required to accelerate an object on a frictionless surface from speed v to 2v is a. You…

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Q: A car is traveling at 10 m/s.a. How fast would the car need to go to double its kinetic energy?b. By…

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Q: The total energy of an object at rest 10 m above the ground on a building is 200 J. The object is…

A: Given , Total energy at 10m above the ground = 200 J Height ,h = 10m acceleration due to gravity, g…

Q: Can work done by the following forces be expressed as potential energy? a. Weight b. Friction C.…

A: For a) weight and c) spring force,  we can expressed work done as potential energy. For b) Friction…

Q: potential energy

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: 18. You perform an experiment involving the change of gravitational potential energy of a falling…

A: m = 5.19 kg mass of water (m') = 1.35 kg

Q: 7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding…

A: A ball is thrown straight up with some initial velocity. Air resistance is neglected.

Q: The mass gains speed.

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Q: As the ball rolls down the hill the ball speeds up and the outside of the ball gets a little warmer.…

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Q: 1. Energy 2. Joules A 3. Work C 4. Power E A. The units for work and energy. B. Stored or gained…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: If the speed of a particle is doubled, what happens to its kinetic energy? a. It will be half. b.…

A: Energy possessed by an object by virtue of its motion is called kinetic energy.  Consider a body of…

Q: Which of the following is NOT an example of potential energy? a. A running woman b. An incredibly…

A: Required : Which is not an example of potential energy.

Q: No machine is 100 % efficient. What happens to the missing energy between input and output of work?…

A: According to the law of conservation of energy - Energy can't be created nor be destroyed. But in…

Q: A book is found to be sitting at the top of a book shelf with a height of 2.5 meters. If the book is…

A: Let the mass of the book = M Initial height = 2.5 m New position of book = 1 m lower than its…

Q: 29.) Which of the following best describes the type of energy that is stored in the food you eat?…

A: When we eat food, we get energy to do various activities within the day.

Q: If you have a ball with a mass of 6.00kg, that has an initial velocity of vA=(2.00i + 5.00j)m/s and…

A: Given value--- mass = 6 kg. initial velocity =( 2i + 5j ) m/s. final velocity = (-2i + 8j) m/s. We…

Q: 1. Which of the following is NOT an example of potential energy? a. A running woman b. An incredibly…

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Q: You take a 13kg bag of lead pellets and drop it from 2m above the ground. a. How much gravitational…

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Q: he energy efficiency of electric vehicles is usually rated in terms of the​ kilowatt-hours (of​…

A: The kWh/100 miles rating is more important for evaluating EV running expenses than MPGe.  The…

Q: Choose all that apply to potential energy.   A. Potential energy can be negative.   B. Potential…

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Q: 45.) Which of the following would describe gravitational potential energy?

A: The gravitational potential energy is given as,

Q: When a stone is dropped from a bridge to a river below, what happens to the gravitational potential…

A: From the law of conservation of energy, one form of energy is converted into another form of energy.…

Q: 2. Consider the concepts of kinetic energy (KE) and gravitational potential energy (GPE) as you…

A: The ball is held 1.4 m above  the ground. KE denotes the kinetic energy of the ball and GPE denotes…