Question

Igor I kg of coal yields 50,000 joule) ZAG
A person decides to use his bath tub water to generate electric power to run a 40 W bulb. The
bath tub is located at a height of 10 m from the ground and it holds 200 liter of water. He
installs a water - driven wheel generator on the ground. At what rate should the water drain
from the bath - mub to light the bulb? How long can be keep the bulb on, if the bath tub was
full initially The efficiency of the generator is 90% (0.8 m/s).​

Answer 1

Answer:

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