Why is it better to breathe through the nose than the mouth?

1 answer:

Citrus2011 [14]3 years ago

3 0

You could get sick by breathing throw your mouth and you have a less chance of getting sick by breathing throw your nose.

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A steel piano string of mass per unit lenght 4×10-⁴kgm-¹ was struck, if the speed of the sound on the string is 300ms-¹. Calcula

attashe74 [19]

Answer:

36 N

Explanation:

Velocity of a standing wave in a stretched string is:

v = √(T/ρ),

where T is the tension and ρ is the mass per unit length.

300 m/s = √(T / 4×10⁻⁴ kg/m)

T = 36 N

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shusha [124]

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The charge of most alkaline earth metals.

frutty [35]

Answer:

2+ charge

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Hope this helps, have a great day :)

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Just before hitting the ball to the ground the ball had a kinetic energy of 12.5 J. Calculate the velocity of which the ball hit

lesantik [10]

Answer:

v = √(25/m)

Explanation:

KE = ½mv²

v = √(2KE/m)

We know the kinetic energy, but not the mass

v = √(25/m)