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प्रश्न
Give three examples of bodies possessing kinetic energy.
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उत्तर
(i) A moving bullet
(ii) A flowing river
(iii) Wind.
संबंधित प्रश्न
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
A bucket full of water .is on the first floor of your house and another identical bucket with same quantity of water is kept on the second floor. Which of the two has greater potential energy ?
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same ?
What is meant by the renewable and non-renewable sources of energy? Distinguish between them giving two examples of weach.
Explain the principle of producing electricity using the nuclear energy.
Name the energy changes for the following:
electric ball
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
Calculate the kinetic energy of a body of mass 0.1 kg. and momentum 40kg m/s.
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
What is the difference between the solid, liquid, and gaseous states of a substance?
