In a small dam, water flows at a rate of 2500 kg/s and falls 30 m....
In a small dam, water flows at a rate of 2500 kg/s and falls 30
m. After calculating the power wasted by the waterfall, how many 75
W light bulbs can be lit by this power?
A)7350 bulbs
B)75000 bulbs
C)9800 bulbs
D)2940 bulbs
Homework Answers
Solution:
Power generated by the system = Mgh = 2500 x 9.8 x 30 watts
Now power of 1 bulb 75 watt
So number of bulbs illuminated = 2500 x 9.8 x 30 / 75 = 9800
Option C
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