Final answer:
The charge of the other piece when an object with 3 C breaks into two and one part has a charge of -2 C is 5 C.
Step-by-step explanation:
If an object with a charge of 3 C breaks into two pieces and one piece has a charge of -2 C, we can find the charge of the other piece by understanding that the total charge must be conserved. Therefore, the sum of the charges of the two pieces must equal 3 C. Since we know one piece has a charge of -2 C, the other piece must have a charge of:
3 C (original charge) - (-2 C) = 3 C + 2 C = 5 C
The exact charge of the other piece is 5 C, and this piece would be positively charged because a positive charge is implied when no sign is explicitly stated.