A small metal sphere, carrying a net charge of q1=−2μC, is held in a stationery position by insulating supports. A second small metal sphere, with a net charge of q2=−8μC and mass 1.50 g is projected towards q1. When the two spheres are 0.800m apart, q2 is moving towards q1 with speed 20 ms−1 as shown in the figure. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity.How close does q2 get to q1?

A small metal sphere, carrying a net charge of q1=−2μC, is held in

1.	A small metal sphere, carrying a net charge of q1=−2μC, is held in a stationery position by insulating supports. A second small metal sphere, with a net charge of q2=−8μC and mass 1.50 g is projected towards q1. When the two spheres are 0.800m apart, q2 is moving towards q1 with speed 20 ms−1 as shown in the figure. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity.How close does q2 get to q1?
Answer» A small metal sphere, carrying a net charge of $q_{1} = - 2 μ C$ , is held in a stationery position by insulating supports. A second small metal sphere, with a net charge of $q_{2} = - 8 μ C$ and mass $1.50 g$ is projected towards $q_{1}$ . When the two spheres are $0.800 m$ apart, $q_{2}$ is moving towards $q_{1}$ with speed $20 m s^{- 1}$ as shown in the figure. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity. How close does $q_{2}$ get to $q_{1}$ ?

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