Estimate the intensity of the radio wave
An AM radio station broadcasts with a power of 28.0kW at a frequency of 890kHz. Estimate the intensity of the radio wave at a point 13.0km from the broadcast antenna.
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what is the end value of n in a hydrogen atom transition, if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57*10^14 Hz?
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A calorimeter contains 29.0 mL of water at 12.0, ^{circ}C. When 2.50 g of rm X (a substance with a molar mass of 50.0 g/mol) is added, it dissolves via the reaction
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