The photoelectric threshold wavelength for tungsten is 2300
The photoelectric threshold wavelength for Tungsten is 2300 Å. Find the energy in eV of the emitted electrons from the surface by ultraviolet light of wavelength 1800 Å.
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A wood block floats on water with 35% of its volume above the surface (of water), what is the average density of the block (in kg/m3)
Three gases, nitrogen, helium, and krypton are confined in a 9.00 L vessel at a pressure of 7.00 atm. The vessel contains 5.00 moles of nitrogen, 2.00 moles of helium, and 2.00 moles of krypton. What is the partial pressure of helium
(a) Show that the actual response at f=fT is approximately 9dB below the maximum value. What is the phase angle at this frequency (b) what is the slope of the magnitude plot for f>>fT What is the phase angle in this frequency range
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Over the past five years, a stock returned 8.3 percent, -32.5 percent, -2.2 percent, 46.9 percent and 11.8 percent. What is the variance of these returns?
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