Which two types of simple machines can be found in a bicycle?

lever and wheel and axle

pulley and wedge

wedge and wheel and axle

inclined plane and pulley

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

How did the germans define who was jewish?