Suppose a star with radius 8.67 108 m has a peak wavelength of 684 nm in the spectrum of its emitted radiation. (a) find the energy of a photon with this wavelength. 2.908e-19 correct: your answer is correct. j/photon (b) what is the surface temperature of the star? 4237 correct: your answer is correct. k (c) at what rate is energy emitted from the star in the form of radiation? assume the star is a blackbody (e = 1). 1.827e7 incorrect: your answer is incorrect. your response differs significantly from the correct answer.

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc