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Home Q & A Board Science-Related Homework Help Physics
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Bugmenot Bugmenot
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12 years ago
A motor with an output power of 100 watts is connected to a flywheel. How long, in units of hours, must the motor operate to transfer 300,000 joules to the flywheel, assuming the process is 100% efficiency?
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#1
12 years ago
A Watt is defined as a Joule/sec.  So,

Time = Joules/Watts
wrote...
#2
12 years ago
The definition of a watt is a Joule per second.

(300,000 joules) / (100 joules/second) = 3,000 seconds

3,000 seconds X (1 minute/60 seconds) X (1 hour/60 minutes) = 0.833 hours
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