Question

A. Narrow bridge oscillated up and down 5 times per second.

Period:

Frequency:

B. A tuning fork has a frequency of 252 Hz.

Period:

Frequency:

Answer 1

(A) Period:

$$T=\dfrac{1}{f}=\dfrac{1}{5\ Hz}=0.2\ s.$$

Frequency:

$$f=5\ Hz.$$

(B) Period:

$$T=\dfrac{1}{f}=\dfrac{1}{252\ Hz}=0.004\ s.$$

Frequency:

$$f=252\ Hz.$$