A5g bullet is shot into a 4kg box. the box goes up 5cm after impact. what is the bullets speed right before impact?

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.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

Photons with the highest energy have the longest period