An observer sits in a boat watching wave fronts move past the boat. the distance between successive wave crests is 0.80 m, and they are moving at 2.2 m / s.

what is the wavelength of these waves?
a. 1.6 m
b. 2.2 m
c. 0.80 m

what is the frequency of these waves?
a. 0.36 hz
b. 2.8 hz
c. 0.80 hz

what is the period of these waves?
a. 0.80 s
b. 0.36 s
c. 2.8 s

To solve this problem we will use the three requested concepts: Wavelength, frequency and period.

The wavelength is the distance between each crest, therefore it is already given and is 0.8m

The correct answer is C.

The frequency can be described as a relationship between wave speed and wavelength therefore

The correct answer is B.

The period is the inverse of the frequency therefore

The correct answer is B.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.