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.

(B) All objects attract other objects

To be specific, the following formula defines this theory very clearly:

F = G * (m1 * m2) / r^2

The Force is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

k2s for potassium sulphide