3 years ago

Mass is constant, but weight can change with location. Explain.

1 answer:

4 0

Weight is relative to gravity. You weigh more on a planet or area that has more gravity because it is pulling you down more. Mass is a measure of how much matter there is but weight is the measure of the pull of gravity on an object

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The mass of an object is 4kg and it has a density of 5gcm^-3. what is the volume

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Answer:

density = mass/ volume

5=4000/ volume

volume=4000/5

volume=800 cm^-3

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To determine the pressure in a fluid at a given depth with the air-filled cartesian diver, we can employ Boyle's law, which stat

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Answer:

The pressure at this depth is $1.235\cdot P_{atm}$ .

Explanation:

According to the statement, the uncompressed fluid stands at atmospheric pressure. By Boyle's Law we have the following expression:

$\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}$ (1)

Where:

$V_{1}, V_{2}$ - Initial and final volume.

$P_{1}, P_{2}$ - Initial and final pressure.

If we know that $V_{2} = 0.81\cdot V_{1}$ , then the pressure ratio is:

$\frac{P_{2}}{P_{1}} = 1.235$

If $P_{1} = P_{atm}$ , then the final pressure of the gas is:

$P_{2} = 1.235\cdot P_{atm}$

The pressure at this depth is $1.235\cdot P_{atm}$ .

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