Question

Sound and waves plz help physics

Answer 1

Answer:

A. f = 8 Hz

B. T = 0.125 s

C. λ = 0.0166 m = 16.6 mm

D. d = 7.98 m

Explanation:

A.

The frequency of the wave can be given as:

$f = \frac{n.\ of\ waves}{time}\\\\f = \frac{360}{45\ s}$

f = 8 Hz

B.

The time period will be:

$T = \frac{1}{f}\\\\T = \frac{1}{8\ Hz}$

T = 0.125 s

C.

The wavelength is given as:

$\lambda = \frac{c}{f}\\\\\lambda = \frac{0.133\ m/s}{8\ Hz}$

λ = 0.0166 m = 16.6 mm

D.

The distance traveled in 1 minute can be found out as follows:

$c = \frac{d}{t}\\\\d = c\ t\\d = (0.133\ m/s)(60\ s)$

d = 7.98 m