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1. a- A spherical balloon made of rubber (an insulator) has the size of 2.00 m...

1. a- A spherical balloon made of rubber (an insulator) has the size of 2.00 m in radius. An amount of charge Q = –1.50×10–6 C is uniformly distributed on the balloon. What is the electric field E at the point 2.40 m from the center of the balloon (use positive sign if E points away from the center and negative sign if E points toward the center)?

b- An infinitely large plane carries a uniformly distributed charge such that the charge density is delta = –1.50×10–6 C/m2 . What is the electric field E at the point that is 2.40 m from the plane (use positive sign if E points away from the plane and negative sign if E points toward the plane)?

Please circle the answers. Thank you

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