Suppose you wanted to produce a sound wave with a wavelength of 1m
in room temperature air. What would its frequency be? *

340 Hz

Explanation:

The frequency of a wave is the number of oscillations completed by the wave per second.

For a wave, the relationship between wavelength of the wave and its frequency is given by the wave equation:

where

v is the speed of the wave

f is its frequency

is its wavelength

In this problem, we have a sound wave, with wavelength of

The speed of sound waves at room temperature is

Therefore, using the previous equation, we can find the frequency of the wave:

your answer would be fusion

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.