If you travel 450 meters in 40 seconds, what is your average speed in meters per second?

A)11.25
B)40
C)450
D)18000

In what direction does the medium move relative to the direction of the wave? explain.

If a simple machine reduces the strength of a force, what must be increased?

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates