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Yuri [45]
3 years ago
11

4. In a object filled with a type of gas, which of the following actions would decrease the pressure

Physics
1 answer:
ExtremeBDS [4]3 years ago
7 0

Answer:

Decrease the number of gas particles, increase the object's area, and reduce the temperature of the gas

Explanation:

<u>TEMPERATURE</u>:

Decreasing the temperature will slow down the molecules. Hence, less no. of collisions will take place between walls of object and molecules. This will result in decrease of pressure.

Therefore, the pressure of a gas can be decreased by increasing its temperature.

<u>NUMBER OF GAS PARTICLES</u>:

Decreasing the number of particles will result in less no. of collisions, hence decreasing the pressure.

Therefore, the pressure of a gas can be decreased by decreasing its no. of molecules or no. of particles.

<u>AREA OF OBJECT:</u>

The pressure is given by the formula:

P = \frac{F}{A}\\\\For constant Force (F):\\P\ \alpha\ \frac{1}{A}

where,

A = Area of Object

Therefore, the pressure of a gas can be decreased by increasing area of object.

So, the correct option is:

<u>Decrease the number of gas particles, increase the object's area, and reduce the temperature of the gas</u>

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3 years ago
Kenneth ran a marathon (26.2 miles) in 5.5 hours. What was Kenneth’s average speed? (Round your answer to the nearest tenth.)
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2 years ago
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157.9 kg

Explanation:

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The S.I unit of density is kg/m³.

From the question,

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D = m/v............................ Equation 1

Where D = Density of gold, m = mass of gold, v = volume of gold.

make m the subject of the equation

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Since the gold is a cube,

v = l³................... Equation 3

Where l = length of the gold cube.

Substitute equation 3 into equation 2

m = Dl³............... Equation 4

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Substitute into equation 4

m = 19300(0.2015)³

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Physics question!!!
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