1. Two point charges are separated by 6 cm. The attractive force between them is 20 N. (a) Find the magnitude of the electric force between the two charges when they are 12 cm apart. (b) If the charges
attracting each other have equal magnitudes, what is the magnitude of each charge? (c) How many
electrons are contained in the charge you found in part (b)?

where’s the list ? the question is incomplete

i don't understand. explain it clearly

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.