You set up a pulley to you lift something. you anchor the rope at one end and arrange a moveable pully to achieve a mechanical advantage of 2. by the time you have lifted the object 5m off the ground, how much rope have you pulled through the pulley?

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.

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explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.