Question

If the amount of fluid flowing the through a tube remains constant, how does the speed...

If the amount of fluid flowing the through a tube remains constant, how does the speed of the fluid change if the radius of the tube decreases from 12-cm to 3-cm?

.

Increases by a factor of 16

b.

Increases by a factor of 4

c.

Decreases by a factor of 4

d.

Decreases by a factor of 16

"Two particles of opposite charge are moved slowly apart. As the particles are moved apart, the force between them is: "

a.

repulsive and decreasing.

b.

attractive and decreasing.

c.

attractive and increasing.

d.

repulsive and increasing

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