We have three identical metallic spheres a, b, c. Initially sphere a is charged with charge q, meanwhile b and c are neutral. Sphere a is brought into contact with sphere b, then disconnected. After this sphere a is brought into contact with sphere c and disconnected again. Finally sphere a is brought into contact with sphere b again and disconnected. What is final charge of sphere a?.

answer: b

explanation:

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!

answer:

dont fall in love :(

Explanation:

the number of people in the crew was 220, which is calculated from the percentage formula.