Acopper ball and an aluminum ball of mass 150 g each are heated to 100°c and then cooled to a temperature of 20°c. the heat lost by the copper ball is 4.6 kj. the heat lost by the aluminum ball is 10.8 kj. what is the specific heat of copper, if the specific heat of aluminum is 0.90 j/g°c?

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

Describe cytokinesis in plants and animals. in animals: in plants.

Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum. determine the term.