Driving to work one morning, you get a flat tire. When using the car jack, you apply 120 N of force to the jack and the jack in turn applies 2000 N of force to lift the car up. What is the mechanical advantage of the jack?

What happens when you change the frequency of a light wave?

If you let go of the notebook after pushing it, will it move?

Classify each of the following as a conductor, semiconductor, or insulator. Air, Gold, Silicon, Rubber, Aluminum.

1. Plastic, rubber, and wood are examples of what kind of material? 2. Name the 3 methods that can charge up objects. 3. Which part of the atom is negatively charged? 4.

A small 24 kilogram canoe is floating downriver at a speed of 5 m/s. What is the canoe's kinetic energy?

A crowd in a stadium is heard by a man standing 823.2 m away. The man hears the noise 2.5 seconds after the noise occurs. How fast was the sound traveling? What's the answer?

Which is not support the theory of plate tectonics?

the acceleration of a body in free fall depends on the place or the world in which it is, true or false?

A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. the square loop is then re-formed into a circular loop, which also consists of a single turn and is also perpendicular to the same magnetic field.

A thin cylindrical shell and a solid cylinder have the same mass and radius. The two are released side by side and roll down, without slipping, from the top of an inclined plane that is 1.8 m above the ground.