The diagram below shows the velocity vectors for two cars that are moving relative to each other

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class

The energy of a photon is equal to (what) times (what) of the photon.

What surface does the epithelial tissue cover? a. the surface of the body b. lines internal organs c. forms many glands d. all of the above