Three charges are placed as follows along the x- and y-axis of an xy-coordinate system: q1 = 2.00 C at x1 = 0 m, q2 = -4.00 C at x2 = 3.00 m, and q3 = 6.00 C at y = 4.00 m. What is the electric potential energy of this system of charges?
A) -40.2 mJ
B) 40.2 mJ
C) -94.2 mJ
D) 94.2 mJ
E) 0 J
Question 2
If the threshold wavelength to dislodge electrons from a metal is 373. nm, what is the work function?
What will be an ideal response?
