How would the readings in the ammeter (in ma) and voltmeter (in volts) change if the 4.50 v battery was flipped so that its positive terminal was to the right?

There would be a negative deflection in both devices.

Explanation:

The terminals of both ammeter and voltmeter are polarised. If not connected appropriately, negative deflection can be observe which nay damage the devices. Negative deflection is the backward flow of current or voltage dur to wrong polarity connection.

the answer is a. at the equator

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!