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.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?