Work and Energy

Work and Energy
Rate at which a body does work is called
energy
power
efficiency
velocity
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Work and Energy
A ship moves at a speed of 4 ms^-1. Water resistance acting on it is 4000 N. The power of its engine is
20 kW
24 kW
11 kW
16 Kw
Author: rikazzz Comment
Work and Energy
As the rain falls, the potential energy changes to
thermal energy
chemical energy
kinetic energy
nuclear energy
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Work and Energy
The main source of heat is
moon
stars
sun
Mars
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Everyday Science
The water stored in damns is used for irrigation and also to generate
heat energy
electrical energy
thermal energy
chemical energy
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Work and Energy
Fossil fuels are burnt to produce electricity in
thermal power
chemical power
nuclear power
solar cars
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Everyday Science
The energy stored in coal is
kinetic energy
potential energy
chemical energy
nuclear energy
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Work and Energy
During the interconversion of energy from one form to other forms, the total energy at any time remains
constant
zero
increasing
decreasing
Author: rikazzz Comment
Work and Energy
The capacity of a body to do work is called
energy
work load
kinetic energy
potential energy
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Work and Energy
The energy use in solar cookers, solar distillation plants, solar power plants is known as
chemical energy
solar energy
thermal energy
nuclear energy
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