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Finger [1]
3 years ago
9

50 points: can someone help me with this question please: A classroom is 5.345m long, 4.128m wide, and 3.859m high. What is the

mass of air it contains?
Physics
2 answers:
Vika [28.1K]3 years ago
7 0
The answer is simple to get, all you have to do is multiply, 5.345×4.128×3.859=85.14559344.

I hope this helps!
lesya [120]3 years ago
5 0

this is basically the same as volume, no?

So, 5.345*4.128*3.859=85.145

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Vertically, the object is in equilibrium, so that the net force in this direction is

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where <em>n</em> is the magnitude of the normal force due to the contact between the object and surface. You're given that the object's weight is <em>mg</em> = 550 N, so <em>n</em> = 550 N as well.

Horizontally, the net force would be

∑ <em>F</em> (horizontal) = <em>p</em> - <em>f</em> = 0

where <em>p</em> is the magnitude of the applied force and <em>f</em> is the magnitude of (kinetic) friction opposing <em>p</em>. Now,

<em>f</em> = 0.012<em>n</em> = 0.012 (550 N) = 6.6 N

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1. What is the supreme law of the United States?
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