Please help im taking a test please help if you can
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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 745Β°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 Γ 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.
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Physics, 22.06.2019 05:30
Could someone . i have tried to solve myself but my calculation is off
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Physics, 22.06.2019 06:00
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marblesβ motions be changed? ?
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Physics, 22.06.2019 16:00
Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?
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