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1.It's proposed to have a water heater that consists of an insulated pipe of 5-cm diameter and an electric resistor inside. Cold water at 20oC enters the heating section steadily at a rate of 30L/min. If water is to be heated to 55oC, determine
A.) the power rating of the resistance heater and
B.) the average velocity of the water in the pipe.
2.A liquid R-134a bottle has an internal volume of 0.001 m3 . initially it contains 0.4 kg of R-134a (saturated mix) at 26oC. A valve is opened and R-134a vapor only is allowed to escape slowly such that temperature remains constant until the mass of R-134a remaining is 0.1kg. find heat tranfer necessary with the surroundings to maintain the temperature and pressure of R-134a constant.
A motorcyclist travels around a curved path that has a radius of 200 . While traveling around the curved path, the motorcyclist increases speed by 1.25 . If the motorcyclist starts from rest, determine the time needed to reach an acceleration of 5...
A soil sample is obtained by pushing a 16 inch long tube into the side of a pit. The tube has an inside diameter of 3 inch and weighs 1.8 lb. The soil in the tube is trimmed so that its ends are flush with the ends of the tube.
A flow has circular streamlines. At t=0 the flow is in the clockwise direction and the angular velocity is pi rad/s. This flow exists for 1 s, and then reverses to counterclockwise with an angular velocity of -pi rad/s for 1 s.
Compute azimuths of all lines for aclosed traverse ABCDEFGHA that has the following balanced angles tothe right, using Bearing AB = N56º18'42"W.
You should provide the structural engineer with a formal typed report that will include all of your analyses and final size of the footing. You should also include all of your design assumptions in your report.
If the ball strikes the bottom of the elevator shaft in 3s, determine the height of the elevator from the bottom of the shaft at the instant the ball is released.Also find the velocity of the ball when it strikes the bottom of the shaft.
A tied short column of square cross-section is subjected to a factored axial load of 2500 kN and a factored bending moment of 175 kN.m. Use a 40 mm clear cover to the ties and a 20 mm maximum aggregate size.
how many students have heights, (a) Greater than 72 inches (b) Less than or equal to 64 inches (c) Between 65 and 71 inches inclusive (d) equal to 68 inches * Assume the measurements to be recorded to the nearest inch.
A single crystal of a FCC metal is oriented so that the [001] direction is parallel to an applied stress of 35.0 MPa. Calculate the resolved shear stress acting on the (111) slip plane in the [110], [0-11], [10-1] slip directions.
a level test track has a coefficient of road adhesion of 0.80, and a car being tested has a coefficient of rolling friction that is approximated as 0.018 for all speeds. the vehicle is tested unloaded and achieves the theoretical minimum stop in 1..
HOCL is added to water in a tank as a disinfectant. after equilibrium is reached it is found that the pH of the water in the tank is 8.2 and the gas phase partial pressure is the head space of the tank is 0.2E-7 atm. (not: henry's law constant for..
Draw the shearing force diagram and the moment diagram of the following problem. The beam is indeterminate. You need to integrate the moment twice to get a formula for the deflection v(x).
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