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almond37 [142]
3 years ago
5

2 questions, brainliest if you get them correct! please only answer if you really know you are right.

Physics
2 answers:
jek_recluse [69]3 years ago
5 0

Answer:

<h2>1. C</h2>

<h2>2. A</h2>

Brainliest please thanks

Eduardwww [97]3 years ago
5 0

Answer:

Number 1 is c and number 2 is a

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The barometric pressure at sea level is 30 in of mercury when that on a mountain top is 29 in. If the specific weight of air is
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To solve this problem we will apply the concepts related to pressure, depending on the product between the density of the fluid, the gravity and the depth / height at which it is located.

For mercury, density, gravity and height are defined as

\rho_m = 846lb/ft^3

g = 32.17405ft/s^2

h_1 = 1in = \frac{1}{12} ft

For the air the defined properties would be

\rho_a = 0.0075lb/ft^3

g = 32.17405ft/s^2

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We have for equilibrium that

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\rho_m g h_1 = \rho_a g h_2

Replacing,

(846)(32.17405)(\frac{1}{12}) = (0.0075)(32.17405)(h_2)

Rearranging to find h_2

h_2 = \frac{(846)(32.17405)(\frac{1}{12}) }{(0.0075)(32.17405)}

h = 9400ft

Therefore the elevation of the mountain top is 9400ft

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