Question

a student rings a brass bell with a frequency of 300 hz. the sound wave travels through brass, air, and glass. what is the wavelength of the wave in brass?

medium	wave speed (m/s)
air	346
glass	5,640

a. 0.64 m
b. 16 m
c. 0.064 m
d. 1.6 m

Explanation:

Step1: Recall wave - speed formula

The wave - speed formula is $v = f\lambda$, where $v$ is the wave speed, $f$ is the frequency, and $\lambda$ is the wavelength. We want to find $\lambda$, so we can re - arrange the formula to $\lambda=\frac{v}{f}$.

Step2: Identify values from the table

The frequency $f = 300$ Hz and the wave speed in brass $v = 4700$ m/s.

Step3: Calculate the wavelength

Substitute the values into the formula: $\lambda=\frac{4700}{300}\approx15.67$ m $\approx16$ m.

Answer:

B. 16 m