An impulse of 21 N*s is exerted on a 0.3 kg baseball traveling 72 m/s west. What is the velocity of the baseball after it has been hit? Report your answer to 1 decimal place.

What do you think car designers do if the damage caused by a crash test is too severe?

Which notation is used to represent an alpha particle? a. b. c. d.

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.