Identify which of the molecules below are polar molecules and which are nonpolar molecules. Justify your answer.

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?

When a pair of 10-n forces act on a box of candy, the net force on the box is a 20 n. b about 14 n. c zero. d any of the above depending on the directions of forces.

How can a cyclist's acceleration change even if its velocity remains constant?