What might cause matter to change states

Physics

1 answer:

k0ka [10]2 years ago

4 0

Temperatures can cause matter to change state.

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As an airplane accelerates in level flight, what parameter must the pilot adjust to keep level and balance Lift = Weight?

Y_Kistochka [10]

Answer:

C. Angle of Attack.

Explanation:

The pilot must adjust the angle of attack parameter. The angle of attack of this plane to get to the desired lift coefficient.

And thus, we have

Lift = Weight

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How would the weight of a 7-kilogram concrete block compared to the weight of a 7-kilogram metal sphere?

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Answer:

C. The block and the sphere would have the same weight.

Explanation:

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Average speed = (4 meters) / (5 seconds)

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2 years ago

CFC, Freon, and aerosols are becoming less commonly used because they

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Earth's neighboring galaxy, the Andromeda Galaxy, is a distance of 2.54×10^7 light-years from Earth. If the lifetime of a human

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Answer:

0.9999986*c

Explanation:

The ship would travel 2.54*10^7 light years, which means that at a speed close to the speed of light the trip would take 2.54*10^7 years from the point of view of an observer on Earth. However from the point of view of a passenger of that ship it will take only 70 years if the speed is close enough to the speed of light.

$\Delta t = \Delta t' * \sqrt{1 - (\frac{v}{c})^2}$