5. Ultraviolet rays are potentially harmful to us primarily due to their A. intensity
B. high frequency.
C. long wavelength.
D. amplitude.

A

Explanation:

Ultraviolet light occurs after white light;

Do you know why gamma rays are harmful because of their high frequency and short wavelength leading to high intensity.

Though the frequency is higher than that of white light, its because of its intensity.

Ultraviolet rays comes handy from depletion of the earth's ozone layer

Hence harmful Ultraviolet rays from the sun attacks the skin Leading to Sun burn and other things.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.