Answer:
Part a)

Part b)

Explanation:
Part a)
Force on the object due to spring force is given as

here we know that


so we have


Part b)
Acceleration of the object is given as



A paper clip is a example of a thing that has a mass of one gram.
Answer: A. Object A will have a positive charge.
Explanation: If the number of protons and electrons are the same, their net charges cancel each other out, and you have a neutral charge. If electrons are transferred to another object, the amount of positive charge will outweigh the amount of negative charge. As a result, you are left with an overall positive charge in object A. Meanwhile, object B is now negative.
Ok, condensation is part of the water cycle. Acid rain comes from acidic air pollution. Burning fossil fuels is a green house gas that contributes global warming. I'd have to go with B.