A 3.0-C positive point charge is located at the origin and a 2.0 ...

[cherise1989]

A 3.0-C positive point charge is located at the origin and a 2.0 C positive point charge is located at x = 0.00 m, y = 1.0 m. Find the coordinates of the point where the net electric field strength due to these charges is zero.
 
  A) x = 0.00 m, y = 0.55 m
  B) x = 0.00 m, y = 0.67 m
  C) x = 0.00 m, y = 1.5 m
  D) x = 0.00 m, y = 0.60 m

Question 2

Upon being struck by 240-nm photons, a metal ejects electrons with a maximum kinetic energy of
 
  What is the work function of this metal? (h = 6.626  10-34 J  s, c = 3.00  108 m/s,
  1 eV = 1.60  10-19 J)
  A) 3.73 eV
  B) 3.13 eV
  C) 4.33 eV
  D) 4.92 eV

[sultansheikh]

Answer to Question 1

A

Answer to Question 2

A