(a) Based on the materials listed in Table 19-1, is the charge of a rubber balloon more likely to be positive or negative? Explain.
(b) If the charge on the balloon is reversed, will the stream of water deflect toward or away from the balloon? Explain.
Table 19-1
Material .................Relative charging with rubbing
Rabbit fur ......................................+ + + + + +
Glass ..............................................+ + + + +
Human hair......................................... + + + +
Nylon ..................................................+ + +
Silk .......................................................+ +
Paper .......................................................+
Cotton ......................................................-
Wood ......................................................--
Amber ....................................................---
Rubber ...................................................----
PVC .....................................................-----
Teflon ...................................................------