Which of the following is untrue of water?
a. it is a non-polar molecule.
b. it has strong surface tension.
c. it is the only natural substance to exist as a solid, liquid, and gas at normal temperatures on earth.
d. it has a solid form that is less dense than its liquid form.

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?

Why does lightning travel from clouds to the ground?

The amount of potential energy possessed by an elevated object is equal to what?