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Roman55 [17]
3 years ago
8

Which best describes the relationship between humidity and air pressure?

Physics
2 answers:
irga5000 [103]3 years ago
7 0

Humid air is lighter, so it has lower pressure.

spayn [35]3 years ago
5 0
Answer:<span>Humid air is lighter, so it has lower pressure.

The reason is the molecules of water are H2O, whose molar mass is 18 g/mol.

These molecules displaces molecules of N2 and O2, whose molar masses are:

N2: 2*14g/mol = 28 g/mol, and
O2: 2*16g/mol = 32 g/mol.

Then molecules of 28g/mol and 32 g/mol are being replaced with molecules of 18g/mol, leading to a lower weight of the same volume of air, which results in lower pressure.
</span>
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A sailboat weighing 980 lb with its occupants is running downwind at 8 mi/h when its spinnaker is raised to increase its speed.
Effectus [21]

Answer:

78.498N

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The Net force provided by the spinnaker can be obtained from Newton's second law of motion as follows;

F=\frac{m(v-u)}{t}................(1)

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u =8mi/hr

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1hour = 3600s,

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12mi/h=\frac{12*1609.34m}{3600s}=5.36m/s

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4 0
3 years ago
A toy gun uses a spring to project a 5.9-g soft rubber sphere horizontally. The spring constant is 8.0 N/m, the barrel of the gu
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