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प्रश्न
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
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उत्तर
A stone kept on a roof possesses gravitational potential energy because of its height from the ground.
संबंधित प्रश्न
A ball of mass 0.20 kg is thrown vertically upwards with an initial velocity of 20 m s-1. Calculate the maximum potential energy it gains as it goes up.
A pendulum is oscillating on either side of its rest position. The correct statement is:
Is energy a vector quantity?
State whether the object possess kinetic energy, potential energy, or both :
A ceiling fan in the off position ______________
What kind of energy is possessed by the following?
A running car ____________
A boy weighing 40 kg makes a high jump of 1.5 m.
What is his potential energy at the highest point? (g = 10 m/s2)
A ball of mass 0.5 kg slows down from a speed of 5 m/s so that of 3 m/s. Calculate the change in kinetic energy of the ball. State your answer giving proper units.
A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value of the stone?
Name the device or machine which convert :
Mechanical energy into electrical energy.
Name the device or machine which convert :
Electrical energy into heat energy.
Name the device or machine which convert :
Electrical energy into sound energy.
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
Name the device or machine which convert :
light energy into heat energy.
How much electrical energy in joules does a 100 watt lamp consume : in 1 minute?
Write the energy transformations which take place in an electric bulb (or electric lamp).
What do you understand by the term 'transformation of energy"? Explain with an example.
What is the meaning of the symbol kWh? What quantity does it represent?
When an object falls freely towards the earth, then its total energy :
The device which converts mechanical energy into energy which runs our microwave oven is :
