If you blow air between a pair of closely-spaced Ping-Pong balls suspended by strings,the balls will swing
A)toward each other.
B)apart from each other.
C)away from the airstream.

Question

Quizplus · Accepted Answer

When air is blown between the Ping-Pong balls, it creates an area of low pressure known as the Bernoulli effect. This causes the balls to move closer to each other as they are drawn towards the low-pressure region. Therefore, the correct choice is A.

If You Blow Air Between a Pair of Closely-Spaced Ping-Pong