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प्रश्न
State whether the object possess kinetic energy, potential energy, or both :
A ceiling fan in the off position ______________
विकल्प
kinetic energy
potential energy
Both
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उत्तर
When switched off, a ceiling fan possesses only potential energy.
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संबंधित प्रश्न
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. Taking g = 10 m s−2, calculate:
- the potential energy possessed by the ball when it is initially at rest.
- the kinetic energy of the ball just before it hits the ground?
Fill in the blank with suitable word :
The sum of the potential and kinetic energies of a body is called __________ energy.
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)
Water stored in a dam possesses ______.
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 :
Light energy into electrical energy.
Describe the energy changes which take place in a radio.
What do you understand by the term 'transformation of energy"? Explain with an example.
Name the energy transfers which occur when a torch is on.
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
