Particles 91, 92, and q3 are in a straight line. Particles q1 = -1.60 x 10-19 C, q2 = +1.60 x 10-19 C,
and q3 = -1.60 x 10-19 C. Particles q1 and q2 are
separated by 0.001 m. Particles q2 and q3 are
separated by 0.001 m. What is the net force on q2?
Remember: Negative forces (-F) will point Left
Positive forces (+F) will point Right
-1.60 x 10-19 C
+1.60 x 10-19 C
-1.60 x 10-19 C
91
+ 92
93
0.001 m
0.001 m

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)