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In an old house, the heating system uses radiators, which arehollow metal devices through which hot water or steam circulates.In one room the radiator has a dark color (emissitivity = 0.891).It has a temperature of 66.1 oC. The new owner ofthe house paints the radiator a lighter color (emissitivity =0.483). Assuming that it emits the same radiant power as it didbefore being painted, what is the temperature (in degrees Celsius)of the newly painted radiator?
You charge an initially uncharged 62.7-mF capacitor through a 46.9-? resistor by means of a 9.00-V battery having negligible internal resistance. Find the time constant of the circuit. What is the charge of the capacitor 1.45 time constants after the..
What is the thermal stress in a SiO2 film that is deposited at 950 C on a Si substrate after it returns to room temperature? Is it tensile or compressive?
The exhaust fan on a typical kitchen stove pulls 600 CFM (cubic feet per minute) through the filter. how many cubic meters per second does this fan pull
A particle has a charge of +2.3 ?C and moves from point A to point B, a distance of 0.12 m. Find the magnitude of the electric force that acts on the particle
create a presentation or power point. you can go to www.microsoft.com and search for brochure and powerpoint
At one point in a pipeline the water's speed is 3.00m/s and the gauge pressure is 5.00x10^4Pa. Find the gauge pressure at a second point in the line
Two objects with masses 5.30 and 2.50 hang 0.800 above the floor from the ends of a cord 8.00 long passing over a frictionless pulley. Find the maximum height reached by the 2.50 object
A plastic rod is rubbed with a cloth, and in the process it acquires a charge of ?2.1×10E?8C. How much does the mass of the rod increase by
Five people are playing tug-of-war. Anders and alyson pull to the right with 44 N and 34 N, correspondingly. Calid and Marisol pull to the left with 55 N and 35 N, respectively. With what force and in what direction does Benito pul of the game is tie..
Calculate the rotational inertia of a wheel that has a kinetic energy of 24,400 J when rotating at 641 rev/min
A hypothetical planet has a mass one-third of and a radius three times that of Earth. What is the acceleration due to gravity on the planet in terms of g, the acceleration due to gravity on Earth?
if mars orbital period is (time for one orbit around the sun) is 1.886 earth years, what is the average speed of mars around the sun
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