The Bernoulli effect causes fast-moving vans on the highway to be drawn together when
A)air speeds up in passing between them.
B)air between them stagnates.
C)they experience lift.
D)all of the above

Question

Quizplus · Accepted Answer

The Bernoulli effect states that as the speed of a fluid (such as air) increases, the pressure decreases. When two fast-moving vans are side by side, air moving between them increases in speed, causing a decrease in pressure. This decrease in pressure creates a low-pressure area that draws the vans together. Option B is incorrect because stagnation means the air is not moving at all, so there would be no Bernoulli effect. Option C is incorrect because lift is a different phenomenon, caused by the pressure difference above and below an object.

The Bernoulli Effect Causes Fast-Moving Vans on the Highway to Be