world class speed skaters can skate a 3,000 meter course in about 4 minutes. what is their average speed for this course?

What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )

Select the three ways that the parallel-plate capacitor differs from a car battery.

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia