Which of the following statements are true? a) Energy can be created and destroyed b) Energy cannot be created but only destroyed c) Energy cannot be destroyed but only created d) Energy can neither be created nor destroyed

Q: A 10 kg toy roller-coaster car is 9 meters above the ground and moves at a speed 15 m/s. What is the…

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Q: 09: A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1 m 1000…

A: Given : Lifting mass = 10 kg Height = 1m Number of times = 1000 Energy supplied by fat per kg…

Q: It is thought that there is at least 4*10^7 kg of uranium-235 that could be minded. The energy…

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Q: Suppose that you want to build a tower out of bricks. Suppose that each brick has a mass of 0.5 kg…

A: The mass of the block, The height of each block, The acceleration due to gravity,

Q: An object with a mass of 5 kilograms is a distance of 5 meters above the surface of the earth. If…

A: The formula for the potential energy at height h relative to the earth surface is:

Q: 16 - An object of mass 81 kg is accelerated to 62 m/s. What is the kinetic energy of the object?…

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Q: How much work is required to stop an electron (m=9.11×10−31kg) which is moving with a speed of…

A: Given:Mass of the electron = 9.11× 10-31 kgVelocity of electron = 1.8 ×106 m/s

Q: Energy is never created or destroyed; it only changes form. Explain the statement.

A: According to the law of conservation of energy, energy can neither be created be nor be destroyed.…

Q: What distance is a book from the floor if the book contains 196 Joules of potential energy and has a…

A: Given data:  Potential Energy (PE) = 196 J Mass (m) = 5 kg Required: The height (h)

Q: how much energy needed to kick a football of mass 500 gm with the velocity 72 km/hr

A: Given,        mass of the football = 500g =0.5 kg        velocity of foot ball = 72 km/hr…

Q: How much work is required to stop an electron (m=9.11×10−31kg) which is moving with a speed of…

A:

Q: Your friend wants to solve the world's energy problem by inventing a device that will deliver 10…

A: By the energy conservation law, energy neither be created nor be distroyed it just changes the type…

Q: The law of conservation of energy states that:  A) energy can neither be created nor destroyed B)…

A: According to the law of conservation of energy, the energy can neither be created and nor be…

Q: 1- Determine the kinetic energy in kJ of a 749 kg roller coaster car that is moving with a speed of…

A: Given data : Velocity=V Mass=m   To find : Kinetic energy

Q: Gasoline yields 4.8 x 107 joules per kg when burned. The density of gasoline is approximately the…

A: From the given information, the car use 4 gallons of gasoline for 100 miles trip.

Q: 20. How many liters of oil would be needed to supply all of the world's energy needs for one year?

A: Solution:-             Energy released by 1…

Q: n the future pennies have become obsolete and a new type of furnace is invented that converts the…

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Q: It is easy to create and destroy energy. True False

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Q: How many tons of coal are needed per day to run a 1000 Mega Watt power plant? One Watt is 1 Joule /…

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Q: The energy possessed by an object because of its motion is termed _____ a) potential energy b)…

A: To find: The energy possessed by an object because of its motion is termed

Q: Calculate the kinetic energy of a 0.300 kg baseball thrown at a velocity of 44 m/s in joules.…

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Q: How much work is required to stop an electron (m=9.11×10−31kg)(m=9.11×10−31kg) which is moving with…

A:

Q: Why do we say energy cannot be created or destroyed? Isn't energy created in a light bulb?

A: The conservation of energy principle states that In an isolated system the total energy of a body…

Q: When it rains vapor, water vapor in the air condenses into liquid water, and energy released is…

A: Given that, Length, l = 0.0254 m Area, A = 38750.16 m2 We need to find the amount of release of…

Q: When it rains vapor, water vapor in the air condenses into liquid water, and energy released is…

A: Solution