2. (a) A -14 nC charge and a 9 nC charge are located on the x-axis...

  

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2. (a) A -14 nC charge and a 9 nC charge are located on the x-axis at x=-4 cm and x=4 cm respectively. i.At what distance (in cm) directly above the 9nC charge is the electric potential equal to zero? O10.1 O5.84 O6.71 O14.2 O2.62 O21.9 ii. What is the electric field at this location (given as a magnitude and the proper polar angle)? Magnitude O 44900 O2.90e+04 O1.20e+04 O13800 O20600 O5370 Angle O130. 0274 O424 O195 050.7 113 (b) Two very small metal point-like spheres with masses 2 g and 10 g are tied together by a 8 cm long massless string and are at rest on a frictionless surface. Each is charged to 4 uC. i.What is the energy (in J)of this system? O 0.702 O3.80 O5.87 O2.70 01.80 1.57 ii. What is the tension (in N) in the string? O 19.6 O47.5 O22.5 O8.78 O73.4 O33.8 iii. The string is cut. What is the speed (in m/s) of each sphere when they are far apart? (HINT: You will need to use TWO conservation laws here. One of them is Energy Conservation, think back to Physics I for the other). Speed of m1 O15.1 O33.7 081.7 O38.7 058.1 0126 Speed of m2 O11.6 16.3 O25.3 O6.74 O7.75 03.02 2. (a) A -14 nC charge and a 9 nC charge are located on the x-axis at x=-4 cm and x=4 cm respectively. i.At what distance (in cm) directly above the 9nC charge is the electric potential equal to zero? O10.1 O5.84 O6.71 O14.2 O2.62 O21.9 ii. What is the electric field at this location (given as a magnitude and the proper polar angle)? Magnitude O 44900 O2.90e+04 O1.20e+04 O13800 O20600 O5370 Angle O130. 0274 O424 O195 050.7 113 (b) Two very small metal point-like spheres with masses 2 g and 10 g are tied together by a 8 cm long massless string and are at rest on a frictionless surface. Each is charged to 4 uC. i.What is the energy (in J)of this system? O 0.702 O3.80 O5.87 O2.70 01.80 1.57 ii. What is the tension (in N) in the string? O 19.6 O47.5 O22.5 O8.78 O73.4 O33.8 iii. The string is cut. What is the speed (in m/s) of each sphere when they are far apart? (HINT: You will need to use TWO conservation laws here. One of them is Energy Conservation, think back to Physics I for the other). Speed of m1 O15.1 O33.7 081.7 O38.7 058.1 0126 Speed of m2 O11.6 16.3 O25.3 O6.74 O7.75 03.02

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2 1 iv 145 a Magnitude angle 72 9 5642 164482 88481651 llsx... View the full answer