Physics GK · all questions

Work, Energy and Power
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Q341

An object of mass 12kg is placed at a certain height from the ground. If the potential energy of the object is 480J, find the height from the ground of an object?

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Q342

An object of mass 11kg is moving at a velocity of 5m/s. How much the energy is contained in that object?

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Q343

The commercial unit of energy is?

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Q344

. . . . . . . . is known as the strength of an object.

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Q345

The kinetic energy of a light and a heavy body is the same. Which of the following will have greater momentum?

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Q346

The potential energy of an object increases with its-

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Q347

The momentum of a body is 50 Kg.ms^-1 and the velocity is 5ms^-1. What is the mass of that body?

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Q348

If an aeroplane travelled 4000m distance and work done is 20000J. Then force applied on it is

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Q349

When a compressed slinky (spring) is released, it changes the potential energy into?

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Q350

Which one of the following does not convert electrical energy into light energy?

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Q351

. . . . . . . . is never alone in nature-

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Q352

Which of the following quantity does not change even after changing place?

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Q353

An object of mass 30 kg is moving at a uniform velocity of 5 m/s. What is the kinetic energy of the object?

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Q354

An object of mass 20 kg is moved with an acceleration of 4m/s². Calculate the amount of force applied to it.

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Q355

Which one of the following is not related to this group?

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Q356

A boy of 50 kg mass climbs 40 stairs in 10 seconds. If the height of each stair is 15cm, then calculate his power. (g = 10ms^-2)

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Q357

Two steel balls of mass 5 kg and 10 kg have same kinetic energy, which ball is moving fast.

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Q358

The . . . . . . . . of an object is fixed and does not change when it is moved.

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Q359

Which of the following statements will be applicable when an object of 10 kg mass capable of free to move can exert a force of 10 Newton?

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Q360

A man pushes a wall and fails to displace it. He does

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