A9.5-g bullet is fired into a stationary block of wood having mass m = 4.92 kg. the bullet imbeds into the block. the speed of the bullet-plus-wood combination immediately after the collision is 0.592 m/s. what was the original speed of the bullet? (express your answer with four significant figures.) webassign will check your answer for the correct number of significant figures. m/s

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]