Suspend a Pair of Ping-Pong Balls from Two Strings So

question 50

Multiple Choice

Suspend a pair of Ping-Pong balls from two strings so there is a small space between them.If you blow air between the balls,they will swing

• A)toward each other.
• B)apart from each other.
• C)away from the air stream,but not necessarily toward or apart from each other.

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