Final answer:
The frequency of a hard drive spinning at 5400 rpm is 90 rev/s, and the corresponding period is approximately 0.0111 seconds.
Step-by-step explanation:
A typical hard drive spinning at 5400 revolutions per minute (rpm) has a frequency in revolutions per second (rev/s) and a corresponding period in seconds. The frequency is calculated by dividing the rpm value by 60, as there are 60 seconds in a minute. So for a hard drive spinning at 5400 rpm, the frequency would be:
Frequency = 5400 rpm / 60 s/min = 90 rev/s.
The period is the inverse of the frequency, representing the time it takes to complete one full revolution. It can be calculated as:
Period = 1 / Frequency = 1 / 90 rev/s = 0.0111 seconds (rounded to four decimal places).
Therefore, the frequency is 90 rev/s, and the period is approximately 0.0111 seconds.