2 years ago

Một chất điểm dao động điều hòa trên trục Ox với phương trình vận tốc là

Physics

1 answer:

Sliva [168]2 years ago

6 0

Answer:

I think you don't understand my word because I write in English your writing in Italian

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A 0.111 kg hockey puck moving at 55 m/s is caught by a 80. kg goalie at rest. with what speed does the goalie slide on the frict

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Answer:

0.076 m/s

Explanation:

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3 years ago

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What is the approximate mass of air in a living room 4.5m×3.4m×2.9m? the density of air is 1.29 kg/m3?

topjm [15]

First we have to calculate the volume of the living room:
V = L x W x H = 4.5 m * 3.4 m * 2.9 m
V = 44.37 m³
We know that Density = 1.29 kg/m²
D = m / V
m = D · V
m = 1.29 kg/m³ · 44.37 m³
m = 57.2373 kg ≈ 57.2 kg
Answer: The approximate mass of air in living room is 57.2 kg.

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