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Engineering
Jaime Dunlap
Technician A says that reversing the direction of refrigerant (as with a heat pump system) could be done to provide cabin heat. Technician B says that the amount of energy loss from the traditional drive belt and electric clutch A/C system is too high for hybrid and electric vehicles. Who is correct?
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Engineering
Madeline
What is the purpose of the following algorithm? input somenum Repeat the following steps for 14 times input variable1 if variable1 < somenum then somenum = variable1 print somenum
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Engineering
London Clarke
In RSA Digital Signature, Suppose Bob wants to send a signed message (x = 4) to Alice. The first steps are exactly t eps are exactly the same as it is done for an RSA encryption: Bob computes his RSA parameters and sends the public key to Alice. We know p = 3, q=11, and bob choose e=3. (Hint: We learn RSA algorithm and key generation in Week 7) (1) What is the public key pair Bob sends to Alice? (2) What is the value of signature s? (3) What is the value of verkpubA (x, s) ? Show all intermediate steps clearly.
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Engineering
Vanessa Bush
4 main causes of erosion
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Engineering
Sydnee Berger
liquid water enters a cooling tower operating at a steady state 40ºC with a mass flow rate of 105 kg/h. Cooled water at 25ºC exits the cooling tower at the same mass flow rate. Makeup water is supplied at 23ºC. Atmospheric air enters the tower at 30ºC, 1 bar, 35% relative humidity. A saturated moist air stream exits at 34 ºC, 1 bar. Determine a. the mass flow rates of the dry air and makeup water, each in kg/h. b. teh rate of exergy destruction within the cooling tower, in kW, for T0 = 23ºC
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Engineering
Lamar Mercer
Why do conditional statements always have only two outcomes?
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Engineering
Dirty Harry
The temperature at which all molecular motion stops is known as: a) Absolute temperature b) molecular temperature c) absolute zero d) Molecular zero e) none of these.
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Engineering
Kendall Stokes
Create a class named Pizza with data fields for description (such as sausage and onion) and price. Include a constructor that requires arguments for both fields and a method to display the data. Create a subclass named DeliveryPizzathat inherits from Pizza but adds a delivery fee and a delivery address. The description, price, and delivery address are required as arguments to the constructor. The delivery fee is $3 if the pizza ordered costs more than $15; otherwise it is $5. Write an application that instantiates at least two objects of each type, and display the values. Save the files as Pizza. java, DeliveryPizza. java, and DemoPizzas. java.
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Engineering
Hugh Foley
Ammonia, 2 kg, at 400 kPa, 40'C is in a piston/cylinder together with an unknorvn mass of sat-urated liquid ammonia at 400 kPa. The pistonis loaded, so it maintains constant pressure, andthe two masses are allowed to mix to a final uni-form state ofsaturated vapor u'ithout external heattransfer. Find the total exergy destruction in theprocess.
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Engineering
Areli
Can a 1½ " conduit, with a total area of 2.04 square inches, be filled with wires that total 0.93 square inches if the maximum fill for that conduit is 40%?
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Engineering
Chic
The activation energy for diffusion in BCC iron is 84 kJ/mol. Which of the following explains why the carbide precipitation activation energy is slightly higher than the BCC diffusion activation energy?
a. Steel is FCC and the activation energy for FCC diffusion is higher
b. Precipitation requires the diffusional activation energy plus an additional energy to form the precipitate.
c. Precipitation requires less energy than diffusion
d. The carbide is orthorhombic which is a much higher energy than BCC
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Engineering
Aaron Yoder
A worker is asked to move 30 boxes from a desk onto a shelf within 3 minutes (assume there is enough space and no other lifting work within 8 hours). The shelf height is 55 inches, and the desk height is 30 inches. The initial horizontal distance from the box to the body is 7 inches. Assume that all the boxes are in the same size (8 inches edge, cube), each weigh 20 lb., and have well designed handles. Is there any lifting risk according NIOSH lifting guide
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Engineering
Kamryn Bridges
An element has two naturally occurring isotopes, isotope 1 with an atomic weight of 78.918 amu and isotope 2 with an atomic weight of 80.916 amu. If the average atomic weight for the element is 79.903 amu, calculate the fraction of occurrences of these two isotopes.
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Engineering
Dax
Each sleeve on a metric Micrometer represents
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Engineering
Carla Richard
In a household, a business is run for an average of 6 hours per day. The total power consumed by a computer and its printer is 245 watts. In addition, a 55-W light bulb runs during the same 6 hours. If their utility charges 11.75 cents per kWh, how much do the owners pay every 30-days?
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