What two properties do all forces have? Since the chair is not moving, what kind of forces are acting on it?

On the figure, draw an arrow showing the direction and size of the net force on the piano. The length of the arrow should represent the size of the force.

What would happen if both dogs pulled the rope with a force of 85 N?

What happens to the motion of an object if the net force acting on it is 0 N?

What will happen to an object that has an unbalanced force acting on it?

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?