Auntie Sarah mops the floor by applying a force of 9N at an angle of 60° to the floor, How much work has she done after mopping a total distance of 10m?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

What is the change in internal energy if 20 j of heat is released from a system and the system does 50 j of work on the surroundings? a. -70 j b. 30 j c. -30 j d. 70 j