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FinnZ [79.3K]
4 years ago
6

On an asteroid, the density of dust particles at a height of 3 cm is ~30% of its value just above the surface of the asteroid. A

ssuming the temperature is 20 K and the average dust-particle mass is 10^-19 kg, estimate the gravitational acceleration on the asteroid.
Physics
1 answer:
melisa1 [442]4 years ago
3 0

Answer:

g =0.1m/s^2

Explanation:

From the law of atmosphere

Nv(y) = n0*e^(-mgy/Kb*T)

<u>Given:</u>

Kb = Boltzmann's constant = 1.38*10^-23 J/K

temperature T = 20K

Mass M = 10^-19 kg

Since it is 30% of value above surface, therefore Nv = 0.3n0

Rearranging equation (I) to make g subject of the formula,

g = [ (Kb*T)*in(0.3n0 / n0) ] / (m*y)

Substituting each of the values given in the equation, we obtain

g =0.1m/s^2

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5 0
3 years ago
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A 20 kg box rests on the ground. Round all answers to the hundredths, if necessary. What is the weight of the box?​
cricket20 [7]
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Weight=Applied force

\\ \sf\longmapsto F=mg

\\ \sf\longmapsto F=20(10)

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An airplane propeller is rotating at 1900 rpm (rev/min).
alexandr1967 [171]

Answer:

See explanation

Explanation:

We have to convert to angular velocity in rads-1 as follows;

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Given that

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Converting 35° to radians we have;

35 × π/180 = 0.61 radians

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3 years ago
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mars1129 [50]

Answer:

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Finances

Jobs can be hard to come by in small towns. You might be required to commute out of town to work but then return to a peaceful environment at the end of a busy day. Housing might be cheaper in small towns, although commuting costs might be higher. Food and child care expenses might be reduced as people are more likely to have gardens and share produce or take turns watching each other's children.

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Explanation:

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3 years ago
There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?
ohaa [14]
63360
5280 feet*12 inches in every foot=63360
4 0
3 years ago
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