Adriver drives 3 blocks north, 3 blocks east and 3 blocks south. what is the total displacement?

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine