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3 years ago

12

The lesser the mass, the greater the acceleration for the given value of force. Why does this happen?

1 answer:

Tju [1.3M]3 years ago

5 0

Newtons law states F=ma
so F/m=a
in addition it makes logical sense the lighter an object the easier it is to accelerate its velocity form 0 to some quantity

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A pressure vessel that has a volume of 10m3 is used to store high-pressure air for operating a supersonic wind tunnel. If the ai

Anna71 [15]

Answer:

The mass of air stored in the vessel is 235.34 kilograms.

Explanation:

Let supossed that air inside pressure vessel is an ideal gas, The density of the air ( $\rho$ ), measured in kilograms per cubic meter, is defined by following equation:

$\rho = \frac{P\cdot M}{R_{u}\cdot T}$ (1)

Where:

$P$ - Pressure, measured in kilopascals.

$M$ - Molar mass, measured in kilomoles per kilogram.

$R_{u}$ - Ideal gas constant, measured in kilopascal-cubic meters per kilomole-Kelvin.

$T$ - Temperature, measured in Kelvin.

If we know that $P = 2026.5\,kPa$ , $M = 28.965\,\frac{kg}{kmol}$ , $R_{u} = 8.314\,\frac{kPa\cdot m^{2}}{kmol\cdot K}$ and $T = 300\,K$ , then the density of air is:

$\rho = \frac{(2026.5\,kPa)\cdot \left(28.965\,\frac{kg}{kmol} \right)}{\left(8.314\,\frac{kPa\cdot m^{2}}{kmol\cdot K} \right)\cdot (300\,K)}$

$\rho = 23.534\,\frac{kg}{m^{3}}$

The mass of air stored in the vessel is derived from definition of density. That is:

$m = \rho \cdot V$ (2)

Where $m$ is the mass, measured in kilograms.

If we know that $\rho = 23.534\,\frac{kg}{m^{3}}$ and $V = 10\,m^{3}$ , then the mass of air stored in the vessel is:

$m = \left(23.534\,\frac{kg}{m^{3}} \right)\cdot (10\,m^{3})$

$m = 235.34\,kg$

The mass of air stored in the vessel is 235.34 kilograms.

7 0

3 years ago

What is the defining feature of a system? A. properties that don’t change B. collision C. interaction D. gravitational for

Evgen [1.6K]

<u><em> . . . a system is a set of interacting/interdependent components contained within a boundary</em></u>

. . so the answer is <u><em>C. interaction</em></u>

8 0

3 years ago

8. true or False!' Youth working in hazardous agricultural occupations

marishachu [46]

Answer:

true

Explanation:

3 0

3 years ago

If you were creating a lamp by hand what type of material would you chose for the wiring and what material would you chose to co

anzhelika [568]

Copper because it contains alot of electricity

6 0

4 years ago

A balloon contains helium with a mass of 0.00296 g. What is the volume of helium in the balloon? (Note: Helium’s density is 0.00

RoseWind [281]

Answer:

178 cm3

Explanation:

We know that density is expresses as mass per unit volume hence

Density= mass/volume

Making volume the subject then

Volume=mass/density

Substituting mass with 0.00296 g and density with 0.00001663 g/cm3 then

Volume=0.00296/0.00001663=177.99158147925 cm3

Rounding off, the volume is approximately 178 cm3

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3 years ago