Volume = 873 - 50 = 723 cm^3
Answer:

Explanation:
The difference between top and bottom surfaces is computed by the following hydrostatic equivalence:



Answer: gravity, circuits
Explanation:
When sphere A and B are brought in contact and separated, charge on each sphere becomes [2x10^-6 + (-4x10^-6)]/ 2 = -1x10^-6 C.
That is, charge is equally separated and is the average of charges on both spheres. The reason behind equal charge on both spheres after separation is, when they are kept in contact, their potential difference becomes same.