How far apart are the lines formed by the singly charged ions of each type on the photographic film? Express your answer using two significant figures. Enter your answers numerically separated by a comma.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.