1 An 850 kg cannon containing a 14.0 kg cannonball is at rest. The cannon fires the cannonball to the right with a velocity of 85.0 m/s. Find the recoil velocity of the cannon.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

To a of 4 x hz is 1. 0. mm nm nm

Which missing item would complete this alpha decay reaction ? > 228/88ra + 4/2he a.224/96 rn b. 232/90 th c. 230/92 u d. 235/92 u