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vivado [14]
4 years ago
5

Science Help ASAP please!!! 35 points what is the primary role of the respiratory system in humans.

Physics
1 answer:
jolli1 [7]4 years ago
7 0
B) To obtain oxygen

The respiratory system gets rid of carbon dioxide in exchange for oxygen
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3 years ago
A 20-lb force acts to the west while an 80-lb force acts 45° east of north. The magnitu 80 lb 70 lb 067 lb 100 lb
natulia [17]

Answer:

option C

Explanation:

given,

force act on west  = 20 lb

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magnitude of force = ?

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magnitude of forces in x- direction

∑ F x = -20 + 80 sin 45⁰

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net force

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F = \sqrt{56.57^2+36.57^2}

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hence, the correct answer is option C

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