Determine the entropy change if the volume is insulated
An impeller provides 20 kJ of work to the air contained in a 0.15 m3 rigid volume, initially at 200kPa and 10°C. Determine the entropy change if the volume is insulated.
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A brake system applies a resistive torque of 25 N. How many revolutions will occur if a 300 kg solid wheel of diameter 0.25 m is slowed from 300 rpm to 0 rpm?
An X-ray machine accelerates electrons over a 300kV potential difference. The current is 1mA and the efficency of X-ray production in the anode is 0.01%. If the average energy of the emitted photon is 100keV, how many photons are emitted per secon
An air standard diesel cycle has a compression ratio of 20 and the heat transferred to the working fluid per cycle is 1800 kJ/kg. At the beginning of the compression process, the pressure is 0.1 MPa and the temperature is 15°C.
Calculate the steady rate of entropy production, s& (kJ/K/s), by the power unit & by the refrigeration unit. Entropy production is not a good thing. Find the amount of unnecessary or lost power = TATM * s& (kW).
Find the A) centripetal and B) total acceleration magnitude of a particle moving on a circle of radius 0.70 m, if its angular speed is 37.0 rpm and its tangential acceleration is 4.9 m/s^2.
Heating up water for your morning shower provides an excellent example of heat exchange (and mixing that you control). Consider the cold water (Cp = 4.18kJ/kg°C) leading to your shower enters a counter--flow heat exchanger at a rate of 0.
The two disks are then linked together without the aid of any external torques, so that they rotate as a single unit with an angular velocity of -2.69 rad/s. The axis of rotation for this unit is the same as that for the separate disks. What is th
Determine the tension in the cable when the balloon is inflated as a sphere having a diameter of 60 ft. Assume that the hot air has a specific weight of 0.040 lb/ft3 and ambient air has a specific weight of 0.070 lb.ft3
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Problem: Nursing interventions for postpartum patients who have diabetes should include which of the following?
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To effectively support children with moderate to severe speech and language impairments in an inclusive setting, educators and caregivers
Dr. Brown is a gastroenterologist who works for the Premier Health Care Network (PHCN). PHCN pays its physicians using the Capitation Payment Model.
Question: Which of the following is a common misconception associated with the medication assisted treatment program?
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