5. How does a jack make changing a tire easier?

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

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.