Identify each of the following as being most like an observation, a law, or a theory. (a) all coastal areas experience two high tides and two low tides each day. (b) the tides in earth's oceans are caused mainly by the gravitational attraction of the moon. (c) yesterday, high tide in san francisco bay occurred at 2: 43 a. m. and 3: 07 p. m. (d) tides are higher at the full moon and new moon than at other times of the month.

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

What are the factors that affect the resistance of a wire?