Gazala makes the device shown in the diagram and uses it to pick up four paper clips on the point of the nail. what would enable gazala to pick up eight paper clips? a) reversing the battery b) reversing the nail and using the nails head c) wrapping the wire around the nail more times d) unwrapping several loops of the wire from the nail.

The answer is C, wrapping the wire around the nail more times

Explanation:

The more a wire is wrap around the nail, the more electromagnet field becomes stronger, so long as  there is more wire unwound, so that the battery can be attached.

For Gazala to be able to pick up four clips at the tip of the wall, Gazala has to wrap the wire around the nail more often that it was done or wrapped before. This is true, because the electromagnet having an attractive force is directly proportional to the magnetic field square that is generated by a current running through the coiled wire.

The magnetic field as stated already, is directly proportional to the number of the wire turns around the magnetic element, it is important to increase the number of turns of the wire, so that electromagnet strength would be greater

i dont think you are wrong for wanting to get even with someone who did you wrong.

(i'm an eye for an eye kind of person) but if this person hurt you in a sexual way, i dont suggest doing anything to him. he should be taken to the proper authorities, you could go to jail depending on what you do. if it was something small like your sibling took your spot on the couch, than yea, i would get even with him by taking one of his favorite snacks lol. but i dont suggest you doing anything illegal.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up