Question

A marching band is practicing. The band director sees the drum major hit a drum. How far away is the director if he hears the drumbeat in 0.40 seconds? The speed of sound is 330 m/s.

12 m
132 m
264 m
825 m

Answer 1

Answer on Question 73462, Physics, Other

Question:

A marching band is practicing. The band director sees the drum major hit a drum. How far away is the director if he hears the drumbeat in 0.40 seconds? The speed of sound is $330\ \mathrm{m/s}$.

a) $12\ \mathrm{m}$

b) $132\ \mathrm{m}$

c) $264\ \mathrm{m}$

d) $825\ \mathrm{m}$

Solution:

We can find the distance from the director to the drum from the formula:

$$d = vt,$$

here, $d$ is the distance from the director to the drum, $v = 330\ \mathrm{m/s}$ is the speed of sound and $t$ is the time.

Then, we get:

$$d = vt = 330\ \frac{\mathrm{m}}{\mathrm{s}} \cdot 0.40\ \mathrm{s} = 132\ \mathrm{m}.$$

Answer:

b) $d = 132\ \mathrm{m}$

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