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tensa zangetsu [6.8K]

2 years ago

15

Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink?

2 answers:

irina1246 [14]2 years ago

5 0

Answer:

The diference in density

Explanation:

astraxan [27]2 years ago

4 0

The warm air rises, because it has become less dense as a result of increase in temperature from heating. Since it is heated, it expands and becomes less dense and such it rises.

The cold air, as result of decrease in temperature contracts, and becomes denser. The cold air is denser than the warm air. The cold air, being the denser sinks. So the cold air sinks because it is denser and heavier than warm air.

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Rudik [331]

Answer:

Explanation:

Given

Weight of roller coaster is $W=2430\ pound$

mass of roller coaster $m=\frac{W}{g}=\frac{2430}{32.2}=75.45$

Distance traveled by roller coaster $d=396\ ft$

drag force $f_d=85\ pounds$

velocity at top $v=59 mph\approx 86.53\ ft/s$

Suppose E is the initial energy

Conserving Energy at bottom and top

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3 years ago

What type of configuration is used in the HEVs available in the US today?

Citrus2011 [14]

Answer:

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Explanation:

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1 year ago

If an element is a semi-conductor, which classification correctly describes it?

stiks02 [169]

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A wave takes 0.5 seconds to complete one cycle. Which characteristic of the wave does this description represent? A. period B. w

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Answer:

period

Explanation:

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