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For those of you on the trip today:

The homework is to read P. 322 to 328, and DO Q 10, 18, P 34, 35, 39, 41, 50

We will be having an AP problem wednesday quiz - one EMI problem, another on momentum.

Here are the quiz solutions.

Q10 . The water sloshing back and forth has a specific frequency associated with it because of the size of the pan and the speed of the waves on the surface of the water. The only way to get the water to slosh is if the swinging occurs at this special frequency.

Q18 Hitting across the end creates a transverse wave, hitting perpendicular to the end creates a longitudinal wave.

Problems.
34. 2.83 m/s
35. 1.259 m
39. 0.332 s
41. The speed of sound in water is 1440 m/s. The sound must travel down to the ocean floor and back. The distance is therefore 2160 meters.
50. The string may be flat, but it is not at rest - try one of the sites below to see what happens when two reversed pulses pass each other on a string.