1.(Textbook Problem 15-55) The cart has a mass of 3 kg and rolls freely from Adown the slope. When it reaches the bottom, a spring loaded gun fires a 0.5−kgball out the back with a horizontal velocity ofvb/c= 0.6 m/s, measured relative tothe cart. Determine the final velocity of the cart.

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.