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raketka [301]
3 years ago
10

7) Straws work on the principle of the outside atmospheric pressure pushing the fluid (for example water) up the straw after you

have lowered the pressure at the top of the straw (in your mouth). Assuming you could create a perfect vacuum in your mouth, what is the longest vertical straw you could drink water from?
Physics
1 answer:
RoseWind [281]3 years ago
3 0

Answer:

The longest straw will be 10.328 meters long.

Explanation:

The water will rise up to a height pressure due to which will balance the atmospheric pressure.

We know

P_{atm}=101325N/m^{2}

Pressure due to water column of height 'h'

P_{water}=1000\times 9.81\times h

Equating both the values we get the value of height 'h' as

h=\frac{101325}{1000\times 9.81}\\\\h=10.328m

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3 years ago
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The Moon requires about 1 month (0.08 year) to orbit Earth. Its distance from us is about 400,000 km (0.0027 AU). Use Kepler’s t
dem82 [27]

Answer:

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now for the time period of moon around the earth we can say

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Now if the same formula is used for revolution of Earth around the sun

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here we know that

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\frac{M_e}{M_s} = 3.07 \times 10^{-6}

4 0
3 years ago
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