A light wave traveling through medium 1 strikes a boundary with medium 2 at
a 45° angle. The light then enters the second medium and refracts away from
the boundary. What could the two mediums be?
A. Medium 1: water
Medium 2: air
B. Medium 1: glass
Medium 2: water
C. Medium 1: glass
Medium 2: diamond
D. Medium 1: diamond
Medium 2: air

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

How will the system respond to a temperature increase?

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size