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A vertical cylinder 6 ft tall and 1 ft in diameter might be used to approximate a man for heat-transfer purposes. Suppose the surface temperature of the cylinder is 78F, h=2 Btu/h · ft2 · F, the surface emissivity is 0.9, and the cylinder is placed in a large room where the air temperature is 68?F and the wall temperature is 45F. Calculate the heat lost from the cylinder. Repeat for a wall temperature of 80F. What do you conclude from these calculations?
Suppose the skin temperature of a naked person is 34 °C while the person is standing inside a room whose temperature is 25 °C. The skin area of the individual is 2 m2.
The hoist has a 5-year life and an estimated salvage value of $1,394. Installation costs were $2,841, and freight charges were $852. Carleton uses straight-line depreciation.
A student shoots spitball at the wall from a height of 1.50 meters. The spitball has an initial horizontal velocity of Vxo, other than has no vertical velocity component. The spitball lands on the ground 8 meters from where it was shot. What is the V..
A grinding wheel of radius 0.35 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75N · m. Find the magnitude of the friction force.
What are the final temperatures of water and the aluminum.
A stone takes 0.28s to travel past a window 2.2m tall. From what height above top of the window did the stone fall?
How far does Tinki drive before passing David.
How much energy is necessary to bring the system back
A distant galaxy is simultaneously rotating and receding from the earth. As drawing shows, the galactic center is receding from the earth at a relative speed of uG = 1.8 x 10^6 m/s.
After that, specify which muscles are pulling on which bones and what type of joints is involved in lifting the glass. (Part two) at last, trace the path of the water from the mouth to the urethra, detailing gastrointestinal and renal / urinary an..
While a woman stands with two feet on a scale, the scale reads 490 N. When she lifts one foot, scale reads more or less.
A parallel-plate air-filled capacitor having area 44.0 cm2 and plate spacing 2.80 mm is charged to a potential difference of 620. V.
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