1.Different colours of light have slightly different . 2.The trick to being able to observe interference patterns for light waves was to shine one light source through . 3.A diffraction pattern is unique because it has a larger central maximum.

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.