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1. An inventor claims to have developed a food freezer that at steady state requires a power input of 0.6 kW to extract energy by heat transfer at a rate of 3000 J/s from freezer contents at 270 K. Evaluate this claim for an ambient temperature of 293 K.
2. An inventor claims to have developed a refrigerator that at steady state requires a net power input of 0.7 horsepower to remove 12,000 Btu/h of energy by heat transfer from the freezer compartment at 08F and discharge energy by heat transfer to a kitchen at 708F. Evaluate this claim.
The Envirofacts Data Warehouse, Environmental Protection Agency, is available at http://www.epa.gov/enviro. This is a data warehouse for public use. Enter your locality and search through the online data warehouse. You may have to modify your loca..
a spring having a center-to-center diameter of 20 mm 0.8 in. is to be constructed of cold-drawn and annealed 316
water is syphoned from the container to a lower place. the flexible hose has a constant diameter and the location
Plot the lift and drag forces exerted on an airfoil as a function of velocity. Use velocity values going from 0 to 45 m/s on a log-linear plot (log-scale on the y axis).
the drive roller for a conveyor belt. a link a-b is rotating at 80 rpm counterclockwise .blink a-b is 60mm longlink b-c
A satellite is in Earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. What is the semi-major axis of the orbit? b. What is the eccentricity? c. If the true anomaly is 160 degrees, what is the satellite's ..
a piston-cylinder device contains 5 kg of saturated water vapor at 3 mpa. now heat is rejected from the cylinder at
a long cylinder pressure vessel with closed ends has an internal pressure of 3 mpa. calculate the hoop stress sigma
The disk rotates about the shaft S, while the shaft is turning about the z axis at a rate of vz = 4 rad>s, which is increasing at 2 rad>s2. Determine the velocity and acceleration of point A on the disk at the instant shown. No slipping occurs.
the block b is suspended from a cable that is attached to the block at e wraps around three pulleys and is tied to the
from the solar constant 1353 wm2 and the average distance between the sun and the earth r 1.49x1011m estimate a the
What are the forces acting on workpiece during turning process. how workpiece should be clamp
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