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Jaslyn Moreno
A completely reversible heat pump produces heat at a rate of 100 kW to warm a house maintained at 25℃. The exterior air, which is at 0℃, serves as the source. Calculate the rate of entropy change of the two reservoirs and determine if this heat pump satisfies the second law according to the increase of entropy principle.
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Guest
A closed system undergoes a process in which work is done on the system and the heat transfer Q occurs only at temperature Tb. For each case, determine whether the entropy change of the system is positive, negative, zero, or indeterminate. (a) internally reversible process, Q > 0. (b) internally reversible process, Q = 0. (c) internally reversible process, Q 0. (e) internal irreversibilities present, Q = 0. (f) internal irreversibilities present, Q < 0.
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Kaeden Collier
A scientist who is evaluating an ancient human skeleton for signs of vitamin and nutrient deficiency is conducting:
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Charlee Huynh
Which of the following is required in order to make a protected left turn A. A left green arrow B. No oncoming traffic C. A left turn only lane D. A large enough gap
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Rex Hooper
At steady state, a cycle develops a power output of 10 kW for heat addition at a rate of 10 kJ per cycle of operation from a source at 1500 K. Energy is rejected by heat transfer to cooling water at 300 K. Determine the minimum theoretical number of cycles required per minute.
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Faith Carey
Consider a steady-state experiment in which the observed current due to reduction of Ox to R is 85 mA/cm2. What is the concentration gradient at the electrode surface? Knowing that the concentration of the species being reduced is zero at the electrode surface, and 0.10 mM in the bulk, how thick is the diffusion layer in this experiment?
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Vance Raymond
How does the theoretical strength of a solid material compare with its experimental strength? Justify your answer. (A) Strength theoretical Strength experimental
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Pedro Farmer
A mysterious device found in a forgotten laboratory accumulates charge at a rate specified by the expression gm = 9 - 10tC from the moment it is switched on. (a) Calculate the total charge contained in the device at t: O. (b) Calculate the totalcharge contained at t: 1 s. (c) Determine the current flowing into the device at t: 1 s, 3 s, and 10 s.
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Jr
That the larger volume of chimney will enhance natural convection is due to (a) Higher thermal conductivity (c) Larger radiation surface area (b) Increase in the buoyancy force (d) Increase in the volume expansion coefficient
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Ray Mccullough
In shaft design, this of the following has the least influence on the shaft diameter to be determined: (a) Shaft deflection (b) Bearing type (c) Factor of safety (d) Rotational speed of the shaft
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Rhett Rivera
Make sure the file HouseSign. py is selected and open. You need to assign variables for the following: A variable for the cost of the sign assigned to 0.00 (charge). A variable for the number of characters assigned to 8 (numChars). A variable for the color of the characters assigned to "gold" (color). A variable for the wood type assigned to "oak" (woodType). Write the rest of the program using assignment statements and if statements as appropriate. The output statements are written for you. Execute the program by clicking the Run button at the bottom of the screen. Your output should be: The charge for this sign is $82.0. g
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Marlon
As Energy is added to ice,

what happens to the temperature over time and why?
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Madyson
Which actions would the maintenance and operations crews carry out as a building is completed and preparing to open to the public? Select all that apply.

troubleshoot solutions to any lingering problems or malfunctions

install new equipment and furnishings

determine which new

residents or company

employees will occupy which offices or residences

make any last minute repairs
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Paityn
What do you doto the moter to get the car going
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Wilson Riley
What size wire would you use to wire a motor that draws 16 A from a circuit?
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