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vazorg [7]
3 years ago
7

Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will____

___________. decreases, decrease increases, decrease increases, stay the same decreases, stay the same
Physics
2 answers:
Natasha_Volkova [10]3 years ago
7 0

Answer:

increases, decrease

Explanation:

The density of a body is the measure of mass concentration of a material. It is an intrinsic property which is constant. It is the ratio of mass and volume

m = Mass

v = Volume

Density

\rho=\frac{m}{v}

This means that density is inversely proportional to volume.

So, if volume increases density will decrease.

MariettaO [177]3 years ago
5 0
If mass remains the same while the volume increases, the density of the substance will decrease.
If mass remains the same while the volume decreases, the density of the substance will increase.
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During a certain time interval, the angular position of a swinging door is described by θ = 4.91 + 9.7t + 2.06t2, where θ is in
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Explanation:

a)

θ = 4.91 + 9.7t + 2.06t² when t = 0

θ = 4.91 rad

θ = 4.91 + 9.7t + 2.06t²

ω = dθ/dt = 9.7 + 2.06t, when t =0

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For sprinters running at 12 m/s around a curved track of radius 26 m, how much greater (as a percentage) is the average total fo
Snezhnost [94]

Answer:

114.86%

Explanation:

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Fy = mg

When running in a circle, there is an additional centripetal force:

Fx = mv²/r

The net force is found with Pythagorean theorem:

F² = Fx² + Fy²

F² = (mv²/r)² + (mg)²

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Compared to just the vertical force:

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m √((v²/r)² + g²) / mg

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√((12²/26)² + 9.8²) / 9.8

1.1486

The force is about 114.86% greater (round as needed).

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