Why does no refraction occur when the media have the same index of refraction?

explanation:

areas w steep slopes, west coast, rocky mountains, and appalachian mountains

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

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.

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