Answer:
3100 m/s
Explanation:
The relationship between frequency and wavelength of a wave is given by the wave equation:

where
v is the speed of the wave
f is its frequency
is the wavelength
For the wave in this problem,
f = 15,500 Hz

Therefore, the wave speed is

The combination of all of the forces acting on object is net force.
They have to be warm because of the word thermic which means heat
An ampere (AM-pir), or amp
Definition: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.