Question

A source charge, which we'll treat as a point chage of 3.00 uc is fixedin space. A second particle with mass 7.20x10^-3 kg and charge -8.00 uc located 0.0450 m away is fired with an ninitla speed 65.0 m/s idrectly at the -3.00 uc chage. What is the closest the -8.00 uc will get to the -3.00 uc charge?

a. sketch a picture of this problem just as the particle is fired and define a coordinate system.

b. what is the potential due to the -3.00 uc charge (the source) at the initial location of the particle (.0450 m) (using V? =0)?

c. what is the initla electric potential energy of the particle?

d. eventually the particle will come to rest some distance, r, from the -3.00 uc point charge. Write an expression for the electricut potential at this location (using V? =0.)

e. Write an expression for the final electric potential energy of the particle at location r.

f. Put it all together. What is the closest the -8.00 uc will get to the -3.00 uc charge?

Answer 1