Central maxima on a screen
Light having wavelength 540 nm is incident on a diffraction grating and consist of second order maxima 50 cm from the central maxima on a screen 1.5 meters from the grating. Determine the number of lines per cm for the grating.
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Throughout a short period of .01 seconds, the loop is pulled from opposite edges to fully flatten the loop. When the resistance of the wire is 1.6 O, determine the total electrical energy dissipated in the wire throughout this time.
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