Question

vibrates per second
ii)
A ruler vibrates 80 times in 20 seconds. What is the frequency of its vibrations?

Answer 1

Answer:

Frequency = 4 hertz

Explanation:

Given:

ruler vibrates 80 times

time = 20 seconds

frequency = total vibrations in 1 second = $80/20 = 4$

Answer 2

Answer:

80 times in 20 seconds

Explanation:

80/20

answer was 4 please set me brianslister answer