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3 years ago

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How does surface area affect the amount of air resistance an object experiences?

1 answer:

Ymorist [56]3 years ago

6 0

The greater the cross-sectional area of an object, the greater the amount of air resistance it encounters since it collides with more air molecules. ... It will have to accelerate for a longer period of time before there is enough upward air resistance to balance the downward force of gravity.

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A car, initially traveling 28.0ft/s, steadily speeds up to 50.0ft/s in 7.40s. Determine all unknowns and answer the following qu

nataly862011 [7]

Explanation:

Given:

$v_0 = 28.0\:\text{ft/s}$

$v = 50.0\:\text{ft/s}$

$t = 7.40\:\text{s}$

First, we calculate the acceleration of the car during this time:

$v = v_0 + at \Rightarrow a = \dfrac{v - v_0}{t}$

Plugging in the given values, we get

$a = \dfrac{50.0\:\text{ft/s} - 28.0\:\text{ft/s}}{7.40\:\text{s}} = 2.97\:\text{ft/s}^2$

Now that we have the value for the acceleration, we can solve for the distance traveled during the time t:

$x = v_0t + \frac{1}{2}at^2$

$\:\:\:\:=(28.0\:\text{ft/s})(7.40\:\text{s})$

$\:\:\:\:\:\:\:\:\:\:\:\:+ \frac{1}{2}(2.97\:\text{ft/s}^2)(7.40\:\text{s})^2$

$\:\:\:\:= 289\:\text{ft}$

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3 years ago

A heat engine is a device that uses _____to produce useful work.

MakcuM [25]

A heat engine is a device that uses heat to produce useful work.

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Which option is part of designing a set of experimental procedures?

horrorfan [7]

Answer:d for apex

Explanation:

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4 years ago

A car with a mass of 833 kg rounds an unbanked curve in the road at a speed of 28.0 m/s. If the

SSSSS [86.1K]

I had the same question

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3 years ago

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spayn [35]

Answer:

It Is violet

Explanation:

It has the shortest wavelengths and the shorter the wavelengths the higher the frequency.

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