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1. A closed tank, V = 10 L, containing 5 kg of water initially at 25?C, is heated to 150?C by a heat pump that is receiving heat from the surroundings at 25?C. Assume that this process is reversible. Find the heat transfer to the water and the work input to the heat pump.
2. A resistor in a heating element is a total of 0.5 kg with specific heat of 0.8 kJ/kgK. It is now receiving 500 W of electric power, so it heats from 20?C to 180?C. Neglect external heat loss and find the time the process took and the entropy generation.
Describe techniques that can be used to check the accuracy of the layout of a set of interchange curves using polar techniques (i.e., angle/distance layout from a central control station).
If the effective stack height of the plant is 100 m, and the ground reflects the SO2 emission perfectly what is the SO2 concentration at a sampling point located 2 m above the ground in the town.
True bearing of line is 300 and the magnetic declination is 30 W its magnetic bearing is what and Next If the back bearing of line is N 600 W its fore bearing is what ?
Using Darcy's Law, calculate the quantity of groundwater (L/day), the seepage velocity (m/s), and the contaminant loading (Kg/day) to the river (assuming no retardation) for the following scenario. Be sure to include both a plane view and cross-se..
sitting on the deck one evening. watching for that pesky bunny, jon and his brother see a twig floating down from an aspen tree. (wait - os that a bunny) they wonder just what the boundary layer looks like on the twig.
Use the Rankine cycle. The boiler operates at a 1000 kpa with a maximum temperature of 30 degrees Celsius. The condenser is isobaric and operates at -5 degrees Celsius.
QZY, Inc. is evaluating new widget machinesoffered by three companies. The machines have the following characteristics:
A 15kg Block rests on top of a 25kg Block which is subject to a 400N force. Block B sits on a table. the Coeffiecents of friction are the same for all surfaces, u(s) is .4 and U(k) is .3. The force is Applied to the bottom block ( with no inclinat..
An engineer uses a standard technique for measuring the thickness of a clay landfill liner that has a typical standard deviation of 0.7 in. The project specifications require the liner thickness to be 36 inches or more, at least 95 percent of the tim..
Compare the physical migration of workers during U.S. industrialization and present-day intellectual transition into a new type of workforce.
If the blades are originally at rest and begin to turn with a constant angular acceleration of ac = 0.5 rad/s^2, determine the magnitude of the velocity and acceleration of points A and B on the blade when t = 4s.
For each of the following transitions, draw E2,y2 on the specific energy chart and fully describe the reasoning. a. In a rectangular channel, there is a sudden drop in the channel bottom. Did the water depth increase or decrease
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