A spherical balloon has a radius of R=73 cm, and its surface has been charged uniformly. You measure the electric field to be E =−Es*r at the balloon’s surface, where Es=25 kN/C.
(a) Calculate the field strength r1=45 cm from the balloon’s center.
(b) Calculate the field strength r2=192 cm from the balloon’s center.
(c) Calculate the net charge on the balloon.
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