2. A hollow rectangular box having dimensions 50 cm x 24 cm x 36 cm floats upright in fresh water with seven eighths of its volume immersed in the water. a) Determine the mass of the box.
b) Determine the up-thrust on the box:​

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.