A man weight 800N climbs up a stairs to height of 15m in ...
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
667W
810W
960W
15000W
Correct answer is C
power = work donetime
= 800×1512.5
= 960W
The acceleration due to gravity may be defined as the force ...
Which of the following graphs of a charge Q against potential difference V across the capa...
Uranium-234 disintegrated to form Thorium-230 by emitting ...
The ice and steam points of a certain thermometer are -20° and 100° respectively. ...