Answer:C) Both have rocky composition
Answer:
P = 147,75 W
Explanation:
A man whose mass is 59.1kg climbs up 30 steps of a stair each step is 25 cm high
Height at 30 steps , h=30×2.5= 7.5 m
Change in potential energy , =mgh=59.1×10×7.5 = 4432.5 J
So, Work done by the man , W= 4432.5J
Power used , P= 
P = 4432.5 /30
P = 147,75 W
Solve any question of Work, Energy and Power with:-
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Answer: Waning
Explanation: Not much explanation for this
Answer:
C. 1500.
Explanation:
750 / .5 = 1500.
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Answer:
The force is 
Explanation:
We can apply the following expression

To find the area of rectangular tent wall:

Now to find the force:


