Refraction occurs when a wave

a.

enters a new medium at an angle.

b.

hits a surface through which it cannot pass.

c.

moves around a barrier.

d.

interferes with another wave.

Briana builds a circuit that has a resistance of 8.0. What voltage should she apply to have a current of 0.8 A?

Suppose that a wave forms in shallow water. Then the depth d of the water (in meters) and the velocity v of the wave (in meters per second) are related by the equation = v9.8d. If a wave formed in shallow water has a velocity of 5.

Which parts of a compound microscope magnify objects? a convex and a concave lens two convex lenses two concave lenses one concave and two convex lenses?

What makes the sky blue? a. reyleigh b. the sun c. the atmosphere d. the birds

An Ohmic material is one in which its resistance does not depend on the voltage across it or the current within it. In that case, the resistance does NOT depend on:

When is the average velocity equal to the instantaneous velocity

Tightening a screw with a larger spacing between its threads requires fewer turns of a screwdriver than tightening a screw with smaller thread spacing. What is a disadvantage of the screw with larger thread spacing?

The role of plants in the water, oxygen, nitrogen, and carbon cycles

As pitch gets higher, wavelength gets?

What term is used to describe the 4 in the expression 4 Ca (NO³) ²