He Period refers to the time it takes an individual particle (or coil) to complete one back and forth vibration about its fixed position. Contrast a low period set of continuous vibrations with a high period set of continuous vibrations. Which leads to a higher frequency of vibration of individual particles (i. e., coils)? Which leads to a longer wavelength

The answer are

A low period set of continuous vibrations

A high period gives a higher wavelength

Explanation:

The relationship between period and frequency is given as

T = 1/F

Therefore a higher period gives a lower frequency while a low period gives a higher frequency.

In expressing the velocity of the wave in terms of period and frequency, we have that v = frequency × wavelength

frequency = velocity / wavelength

Giving us that the period is equal to wavelength / velocity,

From the relationship A high period gives a longer wavelength while a short period gives a shorter wavelength.

Thus the question is easily solved from the equations.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it