Ablock of mass m = 1.00 kg is attached to a spring of force constant k = 500 n/m. the block is pulled to a position xi= 5.00 cm to the right of equilibrium and released from rest. find the speed the block has as it passes through equilibrium if the coefficient of friction between block and surface is 0.350.

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?