When a person steps forward out of a small boat onto a dock, the boat recoils backward in the water. why does this occur? ?

Due to conservation of momentum

Explanation:

We know that if there is no any force acting on the system then  the total linear momentum of system will remain conserve.We know that linear momentum given as

P = m x v

When person steps forward then velocity of person changes it means that the linear momentum also changes to balance this change in linear momentum the boat will move away from the bank. Because the linear momentum should be conserve.

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.