A longitudinal wave is observed. Exactly 6 crests are observed to move past a given point in 9.15. its wavelength is 24 m and its frequency is

0.66 Hz. What is the speed of the wave?

not sure. I'll try answering this later

Explanation:

I'm not sure. I'll try answering this later

A. 90.1 m

The wavelength of a wave is given by:

where

v is the speed of the wave

f is its frequency

For the sound emitted by the whale, v = 1531 m/s and f = 17.0 Hz, so the wavelength is

B. 102 kHz

We can re-arrange the same equation used previously to solve for the frequency, f:

where for the dolphin:

v = 1531 m/s is the wave speed

is the wavelength

Substituting into the equation,

C. 13.6 m

Again, the wavelength is given by:

where

v = 340 m/s is the speed of sound in air

f = 25.0 Hz is the frequency of the whistle

Substituting into the equation,

D. 4.4-8.7 m

Using again the same formula, and using again the speed of sound in air (v=340 m/s), we have:

- Wavelength corresponding to the minimum frequency (f=39.0 Hz):

- Wavelength corresponding to the maximum frequency (f=78.0 Hz):

So the range of wavelength is 4.4-8.7 m.

E. 6.2 MHz

In order to have a sharp image, the wavelength of the ultrasound must be 1/4 of the size of the tumor, so

And since the speed of the sound wave is

v = 1550 m/s

The frequency will be