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प्रश्न
What kind of energy is possessed in a situation when?
A shooting arrow.
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उत्तर
Kinetic Energy.
संबंधित प्रश्न
Write true or false of the following statement.
The energy of flowing water can be converted into electric energy (electricity).
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
Name five renewable sources of energy.
MULTIPLE CHOICE TYPE:
The ultimate source of energy is:
(a) wood
(b) wind
(c) water
(d) sun
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
Obtain an expression for the potential energy of a body of mass m at a height h above the ground.
What is the main energy transformation that occur in:
Photosynthesis in green leaves.
Give one example when:
Kinetic energy to potential energy.
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
