The value of the underlined 8 is, hundred billion's. Hope this helped!
Choice 'b' is one possible way to state
Newton's second law of motion.
The other choices are meaningless.
Answer:

Explanation:
given data
Radius of sphere 3.0 cm
charge Q = 2.0 m C
We know that maximum electric field is given as

electric field inside the sphere can be determine by using below relation


