Answer :
Answer:
1.33 seconds
Explanation:
First, we need to convert 45 revolutions per minute into hertz or revolutions per second. So:
[tex]45\text{ rev/min }\times\frac{1\text{ min}}{60\text{ s}}=0.75\text{ rev/sec}[/tex]It means that 0.75 rev/sec or 0.75 Hz is the frequency. Then, the period will be equal to the inverse of the frequency, so the period is equal to:
[tex]T=\frac{1}{f}=\frac{1}{0.75\text{ rev/sec}}=1.33\text{ seconds}[/tex]Therefore, the answer is 1.33 seconds