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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