Salt dissolves more quickly in water when the water molecules are moving very quickly. in which of these water samples would salt dissolve most slowly? water at 15°c water at 50°c water at 75°c water at 98°c

Ahot-air balloon is drifting straight downward with a constant speed of 2.40 m/s. when the balloon is 7.63 m above the ground, the balloonist decides to drop one of the ballast sandbags to the ground below. how much time elapses before the sandbag hits the ground?

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

What sort of waves exhibit the doppler effect?