How much power is dissipated in the wiring
An air conditioner draws 12 A at 220 V ac. The connecting cord is copper wire with a diameter of 1.450 mm.
a. how much power does this air conditioner draw?
b. If the total length of wire is 18 m, how much power is dissipated in the wiring?
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If the work function of aluminum is 4.3 eV, does the ensuing photon have enough energy to knock an electron out of aluminum? If so what is the wavelength of the electron that comes out of the aluminum?
If the total length of wire is 18 m, how much power is dissipated in the wiring?
Light with a frequency of 2 X 10^15 Hz shines on a copper surface (=4.70 eV). What is the maximum kinetic energy of the photoelectrons?
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