A) 7.46 J
B) 7400 J
C) 7.46 erg
D) 74.6 J
E) 746 J
Correct Answer: A
Solution :
\[P\times 40%=\frac{W}{t}\Rightarrow \frac{746}{4}\times \frac{40}{100}\left( \frac{W}{2\pi \times \frac{600\times 2\pi }{60}} \right)\] \[\therefore \] \[W=7.46\,J\]You need to login to perform this action.
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