Water at 20 degree celsius enters a 4cm o. d tube 4m long and is heated by stream condensing on the outside of the tube. if the water flow rate is 10/kg. determined the temperature of the stream necessary to heat the water at 50degree celsius, and estimate the pressure drop.

Acubic shaped box has a side length of 1.0 ft and a mass of 10 lbm is sliding on a frictionless horizontal surface towards a 30 upward incline. the horizontal velocity of the box is 20 ft/s. determine how far up the incline the box will travel (report center of mass distance along the inclined surface, not vertical distance)