How would an astronomer explain the difference between the two spectra? a. hydrogen gives off light differently if star is more distant b. light traveling through space is warped by the vacuum c. the star is traveling away from us, lengthening the light waves d. the star is fusing a different kind of hydrogen than the sun.

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?