The bending of light as it moves from one medium to another with differing indices of refraction is due to a change in what property of the light? A) amplitude B) period C) frequency D speed E) Color

If the water in a lake is everywhere at rest, what is the pressure as a function of distance from the surface? The air above the surface of the water is at standard sea-level atmospheric conditions.

A cyclist accelerates from 0 meters per second to 8 meters per second in 3 seconds. What is his acceleration? Is his acceleration higher than that of a car accelerates from 0 to 30 meters per second in 8 seconds

Jill activates a reusable hand warmer on a chilly day. As it warms her hands, the liquid inside the warmer crystallizes. Describe the process. A) Chemical energy is modified to mechanical energy during the crystallization.

What is the sequence of energy transformations associated with a hydroelectric dam? electrical energy into mechanical energy into kinetic energy into gravitational potential energy gravitational potential energy into kinetic energy into mechanical

A dense mix of dry, hot rock fragments and hot gas erupting from volcanic vents at high speed is

During melting, the forces of attraction between the molecules A) become weaker. B) remain the same. C) become stronger. D) become stronger and then weaker.

What law states that when matter undergoes a physical or chemical change, no atoms are created or destroyed?

If the moon disapared what affect would this have on earths tides

Newtons first law states that no force is required to maintain motion in a straight line at a constant speed. If newtons first law is true, why must we continue to pedal a bicycle on a level surface to keep moving?

A box is lowered using a rope. If the acceleration of the box, is 3.3 m/s2 (downward) and its mass is 29.1 kg, what is the magnitude of the tension in the rope?