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A refrigeration unit is to be designed for a meat market using R-22 to maintain meat at 0.00°C while operating in an environment at 30.0°C. The refrigerant enters the condenser as a saturated vapor and exits as a saturated liquid. Determine the coefficient of performance (COP) for this refrigerator, using
a. A reversed Carnot cycle operating between these temperature limits.
b. An isentropic, vapor-compression refrigeration cycle with an aergonic, adiabatic throttling valve installed between the high-pressure condenser and the low-pressure evaporator.
A 16.3 kilograms block rests on a horizontal table and is attached to one end of a mass less, horizontal spring. Find coefficient of kinetic friction between block and table
a gaussian surface encloses two charges. the total electric flux through the gaussian surface is 7.8 x 106 n m2c. if
An ac generator supplies a peak (not rms) voltage of 120.0 V at 60.0 Hz. It is connected in series with a 50.0-Ω resistor, What is the rms voltage of the generator
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of a chamber
An amusement ride consists of a car moving in a vertical circle on the end of a rigid boom. The radius of the circle is 32 meters. What is the force of the boom on the car
Objects with masses of 230 kilogram and a 530 kilogram are separated by 0.440 meter. Determine the net gravitational force exerted by these objects on a 48 kilogram object located midway between them
Susan, driving north at 52 mph , and Shawn, driving east at 52 mph , are approaching an intersection. What is Shawn's speed relative to Susan's reference frame
A 6.4-cm-diameter, 10-cm-long cylinder contains 120mg of oxygen (O2) at a pressure less than 1 atm. What is the temperature of the gas
a proton moves along the x-axis according to the equation x 50t 10t2where x is in meters and t is in seconds.
An object 1.40 cm high is held 3.00 cm from a person\'s cornea, Find the magnitude of the radius of curvature of the convex mirror formed by the cornea
Carbon-14 datin of ancient objects requires that material to be organic in order to assay its age. You hear someone sat that a dinosaur bone ws carbon dated to be 75 million yaers old. What are two specific reasons that this claim is incorrect?
Low-frequency vertical oscillations are one possible cause of motion sickness, with 0.20 hz having the strongest effect. How much time elapses between two waves hitting the ship
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