A 20.0 kg mystery box rests on a horizontal floor. The coefficient of static friction is us = 0.50 and the coefficient of kinetic friction is uk = 0.30. Determine the force of friction, Ff acting on the box if a horizontal external applied force FA= 75 N is exerted on it.

In science and physics what is the standard unit of measure for speed?

According to valence bond theory, which orbitals overlap in the formation of the bond in hf according to valence bond theory, which orbitals overlap in the formation of the bond in hf 2s on h and 2p on f 1s on h and 2s on f 1s on h and 1p on f 1s on h and 2p on f 1s on h and 3p on f

Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?