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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

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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<em></em>

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First, we find the volume of the fuel

since the tank is cylindrical,<em> we assume that the fuel within also takes the cylindrical shape.</em>

<em>Also, we assume that the fuel completely fills the tank.</em>

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Read 2 more answers

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Answer:

The speed of the water shoot out of the hole is 20 m/s.

(d) is correct option.

Explanation:

Given that,

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$\dfrac{1}{2}\rho v_{1}^2+\rho gh_{1}=\dfrac{1}{2}\rho v_{2}^2+\rho gh_{2}$

Where,

v₁= initial velocity

v₂=final velocity

h₁=total height

h₂=height of the hole from the base

Put the value into the formula

$v_{1}^2=2g(h_{2}-h_{1})$

$v_{1}=\sqrt{2g(h_{2}-h_{1})}$

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3 years ago

During an adiabatic process an object does 100 J of work and its temperature decreases by 5 K. During another process it does 25

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Answer:

The heat capacity for the second process is 15 J/K.

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