Answer
a. Rabbit fur acquires positive charge, and the glass a negative charge
b. Glass acquires positive charge, and the rubber a negative charge.
c. Glass and rubber.
Work Step by Step
From table 19-1,
a.
The rabbit fur has a greater relative positive charge than the glass after rubbing, so the rabbit fur acquires positive charge, and the glass a negative charge.
b.
Glass has the greater relative positive charge than the rubber after rubbing, so the glass acquires positive charge, and the rubber a negative charge.
c.
The rabbit fur and glass are next to each other in the table, so the rubber fur will acquire a relatively little amount of positive charge from the glass.
The glass and rubber have a much greater separation in the table, meaning that a lot more charge is going to be exchanged here than in the case above.