If the mass of the earth were 1/4 times the size (while radius remains constant), how would its escape velocity change?.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Why don't you see your reflection in water with waves or repples

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c. what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?