Light is incident from air on the surface of a glass slab. In the air the light beam makes an angle of 30° with the normal to the surface, while in the glass the angle is 25°. What is the index of refraction of the glass?​

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.

its a 5.5 n

glad that

the right answer is 0.3 meters per second

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank