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masha68 [24]
3 years ago
10

Why does the moon lack an atmosphere?  

Physics
1 answer:
vesna_86 [32]3 years ago
8 0
Because when it had any, the warmth of the sun heated the atmosphere to the point where the average speed of the gas molecules exceeded the escape velocity for a body with the moon's mass and size. So, little by little, they escaped.
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How does a fuse work?
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A. a material burns out when current is excessive

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Which of the following items has the most inertia while at rest?
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Air bags can be dangerous or fatal under certain circumstances. you should not sit closer than ______ inches from the steering w
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Read 2 more answers
The density of gold is 19 300kg/m cube. what is the mass of gold cube with the length 0.2015m?
Sergeeva-Olga [200]

Answer:

157.9 kg

Explanation:

Density: This can be defined as the ratio of the mass of a body and it's volume.

The S.I unit of density is kg/m³.

From the question,

Density = Mass/volume

D = m/v............................ Equation 1

Where D = Density of gold, m = mass of gold, v = volume of gold.

make m the subject of the equation

m = Dv.................... Equation 2

Since the gold is a cube,

v = l³................... Equation 3

Where l = length of the gold cube.

Substitute equation 3 into equation 2

m = Dl³............... Equation 4

Given: D = 19300 kg/m³, l = 0.2015 m

Substitute into equation 4

m = 19300(0.2015)³

m = 157.9 kg.

4 0
3 years ago
Help please! Thanks so much!
qaws [65]
You pretty much just have to convert and be mindful of significant figures.

5 km = 3 miles
0.3 cm = 0.12 in
4 0
3 years ago
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