Author Question: What is the wavelength of a photon having energy 2.00 eV? (c = 3.00 108 m/s, h = 6.626 10-34 J s, ... (Read 90 times)

casperchen82 · **on:** Jul 29, 2018

What is the wavelength of a photon having energy 2.00 eV? (c = 3.00 108 m/s, h = 6.626 10-34 J s, 1 eV = 1.60 10-19 J)

What will be an ideal response?

Question 2

A +3.0-C point charge is initially extremely far from a positive point charge Q. You find that it takes 41 J of work to bring the +3.0-C charge to the point x = 3.0 mm, y = 0.0 mm and the point charge Q to the point x = -3.0 mm, y = 0.00 mm.

What is Q? (k = ) A) 55 nC
B) 9.1 C
C) 4.6 C
D) 27 pC