66. Which of the following is not an example of harmonic
motion?
A. a ball rolling down a hill
B. pistons in a running car engine
C. a swinging pendulum
D. waves in a pond spreading outward from a stone
that was dropped

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

Which of the following are guidelines to follow for obtaining accurate observations