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Physics, 22.06.2019 11:50, morenodonaldo762
The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e
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Physics, 22.06.2019 21:00, emilyrobles
Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer
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Physics, 22.06.2019 23:40, Demondevilg
Along wire of diameter 1 mm is submerged in an oil bath of temperature ā 31Ā°c. the wire has an electrical resistance per unit length of 0.01 Ļ/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2Ā·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1Ā°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kgĀ·k, and 20 w/mĀ·k.
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