Which of the following describes wavelength?
A.
the number of waves that pass a point in a given amount of time
B.
the distance between crests of adjacent waves
C.
the distance a wave travels in a given amount of time
D.
the height of a wave

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)