A boy observes 40 waves pass a point in 80 seconds what is the frequency of the waves?

Frequency = 0.0167 Hz

Explanation:

Given the following data;

Number of waves = 40

Period, T = 80 seconds

To find the frequency of the wave;

Frequency = 1/period

Substituting into the equation, we have;

Frequency = 1/60

Frequency = 0.0167 Hz

Therefore, the frequency of the waves is 0.0167 Hertz.

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.