Work, Power And Energy
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Question Status
1
1
169
A freely falling object eventually stops on reaching the ground. What happens to its kinet...
By Trisha Dave, 5 years ago
replies 1
0
1
178
Find the energy in kW h consumed in 10 hours by four devices of power 500 W each.
By Trisha Dave, 5 years ago
replies 1
0
1
211
Soni says that the acceleration in an object could be zero even when several forces are ac...
By Trisha Dave, 5 years ago
replies 1
0
1
190
In each of the following a force, F is acting on an object of mass, m. The direction of di...
By Trisha Dave, 5 years ago
replies 1
0
1
157
Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60...
By Trisha Dave, 5 years ago
replies 1
0
1
184
An object of mass, m is moving with a constant velocity, v. How much work should be done o...
By Trisha Dave, 5 years ago
replies 1
0
1
211
Illustrate the law of conservation of energy by discussing the energy changes which occur ...
By Trisha Dave, 5 years ago
replies 1
0
1
183
An electric heater is rated 1500 W. How much energy does it use in 10 hours?
By Trisha Dave, 5 years ago
replies 1
0
1
158
A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done so...
By Trisha Dave, 5 years ago
replies 1
0
1
155
Can there be displacement of an object in the absence of any force acting on it? Think. Di...
By Trisha Dave, 5 years ago
replies 1
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