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Physics, 21.06.2019 19:10
Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745ยฐc. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 ร 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.
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Physics, 21.06.2019 22:00
Which type of microscope would allow the viewer to see ribosomes inside a cell?
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In which section of nuclear fussion occura. reactor vesselb. heat exchangerc. condenserd. cooling tower
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Physics, 23.06.2019 21:00
The portion of the visible spectrum that appears brightest to the human eye is approximately 560 nm in wavelength, which corresponds to yellow-green. what is the frequency of this light?
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