Which condition is necessary for water droplets to condense and form clouds?

dry air
ice crystals in air
tiny particles in air
rising temperatures

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank

What ia the energy of an object because of its potential and kinetic energies