Which describes newton’s law of universal gravitation? a) all objects repel all other objects. b) all objects attract all other objects. c) gravitational force is directly proportional to the distance between objects. d) gravitational force increases with distance.

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference