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How else could you heat the water for the children in problem 8.14?
Problem 8.14
A child's pool is eight feet in diameter and two feet high. It is filled by a garden hose up to a level of one foot. The children complain that it is too cold. Can you heat it up to an acceptable temperature using hot water from the house? How much hot water would you need to add?
10 kg of ammonia is at 0c contained in a cylinder at 516 kpa by a free moving piston. it is heated until it vaporizes
determine the specific volume of superheated nitrogen gas at an absolute pressure of 678 kpa and -134degc based on a
A rigid tank contains water vapor at 200 degrees celcius and unknown pressure. When the tank is cooled to 150 degrees celcius, the vapor starts condensing. Estimate the initial pressure in the tank.
Five kilogram of saturated water vapor at 300 kPa is heated at constant pressure until its temperature reaches 200oC. Calculate the work done by the steam during this process.
1. Inlet Exit Pressure 1.15 MPa 0.05MPa Velocity 30 m/sec 15.5 m/sec Height above datum 10 m 2m If the volume flow rate of the fluid is 40 m3 /s, estimate the net energy transfer from the fluid as work.
A horizontally oriented copper rod length of l=1m is rotated about avertical axis passing through its middle. what is number of rps at wich this rod ruptures?
Air enters a steady-flow turbine at 1600 K and exhausts to the atmosphere at 1000 K. The second law efficiency is 85%. What is the turbine inlet pressure?
tom and jim are kicking a ball which has a mass of 490g back and forth. tom kicks the ball with a speed of 5ms
As the balloon rises, it will expand. The temperature of the helium is always equal to the local atmospheric temperature, so it decreases as the balloon gains altitude. Calculate the maximum altitude of the balloon in a standard atmosphere.
the acceleration of a particle moving along a straight line is inversely proportional to its speed with the constant of
Saturated liquid steam at 2 MPa steadily enters a valve where it is throttled to 0.3 MPa. The inlet and outlet diameter is 1 cm. The flow rate is 0.012 kg/s. Determine the outlet density [kg/m3] of the steam. Also show that it is reasonable to neglec..
analyze a hydrogen jt cycle with isothermal compression occurring at 300k with an outlet pressure 2 times the
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