How much power is radiated by a copper penny at 230°C?
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How much power is radiated as sound from a band whose intensityis1.4Ã10^-3 W/m2 at a distance of 23 m? Answer in units of W.
A particular radiating cavity has the maximum of its spectral distribution of radiated power at a wavelength of 289.8 nm. The temperature is then changed so that the total power radiated by the cavity is increased sixteenfold. [2 marks] (a) Compute the new temperature. (b) At what wavelength does the new spectral distribution have its maximum value?
I need to know how to calculate the electric field in a traveling wave if I know the radiated power.