Water (p 1000 kgm3) is pumped through a smooth 2 inch diameter pipe, 50 m higher than the pump intake into the top of a tank at atmospheric pressure. the water pressure before the pump is 300 kpa (absolute). water leaks at the base of the tank through a sharp-edged orifice of diameter 1 inch with a discharge coefficient of 0.7. if the head loss through the pipes is 2.1 m, how much energy must the pump supply to maintain the level in the tank at 3 m above the orifice?

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.