What do the arrows in this photograph represent? O A. An action-reaction force pair
O B. A pair of unbalanced forces at work
O C. Friction and air resistance
D. Gravity and air resistance

The diagram shows a person using a piece of gym equipment to lift weight which best describe the body in terms of simple machine

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

How do the kidneys affect homeostasis