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sattari [20]
2 years ago
7

What is disaster????​

Physics
2 answers:
elixir [45]2 years ago
8 0

Answer:

DISASTER <em><u>IS </u></em><em><u>A </u></em><em><u>SERIOUS </u></em><em><u>PROBLEM </u></em><em><u>OF </u></em><em><u>OCCURRING</u></em><em><u> </u></em><em><u>OVER </u></em><em><u>A </u></em><em><u>SHORT </u></em><em><u>OR </u></em><em><u>LONG </u></em><em><u>PERIOD.</u></em><em><u> </u></em>

telo118 [61]2 years ago
4 0

<u>Disaster</u>:- a calamitous event, especially one occurring suddenly and causing great loss of life, damage, or hardship, as a flood / airplane crash.

:))

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20 cubic inches of a gas with an absolute pressure of 5 psi is compressed until its pressure reaches 10 psi. What's the new volu
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B. V_{f}= 10\,cubic\,inches

Explanation:

Assuming we are dealing with a perfect gas, we should use the perfect gas equation:

PV=nRT

With T the temperature, V the volume, P the pressure, R the perfect gas constant and n the number of mol, we are going to use the subscripts i for the initial state when the gas has 20 cubic inches of volume and absolute pressure of 5 psi, and final state when the gas reaches 10 psi, so we have two equations:

P_{i}V_{i}=n_{i}RT_{i} (1)

P_{f}V_{f}=n_{f}RT_{f} (2)

Assuming the temperature and the number of moles remain constant (number of moles remain constant if we don't have a leak of gas) we should equate equations (1) and (2) because T_{i}=T_{f}, n_{i}=n_{f} and R is an universal constant:

P_{i}V_{i}= P_{f}V_{f}, solving for V_{f}

V_{f} =\frac{P_{i}V_{i}}{P_{f}} =\frac{(5)(20)}{10}

V_{f}= 10 cubic\,inches

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