When is it easier to press the syringe with water or air ?

Why is it easier to perform the skating on the snow?

Is the air from the syringe also warm ?

Why is it easier for you to float in salt water than in fresh water ?

Why is it easier to balance a bicycle in motion ?

The volume of the air bubble increases by 10%, when it rises from bottom to the surface of the water pond. If the temperature of the water is constant, find the depth of the pond. (1 atm = 10m of water column)

(A): On a rainy day sound travel faster than on a dry day. (R): When moisture is present in air the density of air increases.