Asked by marv

a boy weighing 350N runs up a flight of stairs consisting of 20 steps each 10cm high in 10 seconds. What is his power? show your workings
Answered by Elena
The height is
h = 20•0.1 = 2 m
The work is W = mgh =350•2 = 700 J
Power = Work/time = 700/10 =70 W
Answered by yemi
A 40kilowatt electric cable ??$ used to transmit electricity through a resistor of resistance 2ohms at 800 volts, the power loss at energy is? Pls show workings
Answered by yemi
A generator ??$ on daily use in the process 106kw ????? 540w tungsten box are on force the same time interval. Thee energy consumed is
Answered by Mohammed
a person with a mass of 40 kg runs up a flight of stairs in 12 seconds the flight has 20 steps and the height of each step is 20cm
Answered by Anonymous
133.33 W
Answered by Anonymous
13.33 W
Answered by Godspower
MGH/T means mass × acc due to gravity × hight
M=350N, G=10ms-1, H=10CM, T=10 seconds.
350×10×10/10
=3500W
Answered by Anonymous
75 wats
Answered by Deborah
Godswill show workings
Answered by Anonymous
Godspower pls show ur workings

Answered by Genius
Why didn't u guys add gravity which is 10
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