4 years ago

Which of the following is a correct order in which air moves through the human respiratory system when a person inhales?

Physics

1 answer:

uysha [10]4 years ago

5 0

Answer:

b. nose, pharynx, larynx, trachea, bronchi, lungs

Explanation:

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The left side of the heart creates a pressure of 120 mm Hg by exerting a force directly on the blood over an effective area of 1

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Answer:

23.99N

Explanation:

Given:

Pressure created by the heart = 120mm of hg

converting the pressure into the standard unit of N/m²

1mm of hg = $\frac{1}{760}atm=\frac{1}{760}\times 1.013\times10^5N/m^2$

now, 120 mm of hg in N/m² will be

120mm of hg = $\frac{12}{760}\times 1.013\times10^5N/m^2$

also

given effective area = 15.0 cm² = 15 × 10⁻⁴m²

Now,

Force = Pressure × Area

thus,

Force exerted will be = $\frac{120}{760}\times 1.013\times10^5N/m^2$ × 15 × 10⁻⁴m²

Force exerted will be = 23.99N

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3 years ago

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Answer:

$v=(6ti+6k)\ m/s$

Explanation:

Given that,

The position of a particle is given by :

$r(t) = (3.0 t^2 i + 5.0j+ 6.0 tk) m$

Let us assume we need to find its velocity.

We know that,

$v=\dfrac{dr}{dt}\\\\=\dfrac{d}{dt}(3.0 t^2 i + 5.0j+ 6.0 tk) \\\\=(6ti+6k)\ m/s$

So, the velocity of the particle is $(6ti+6k)\ m/s$ .

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3 years ago

A simple motor converts _________________ energy into ___________________ energy.

swat32

Answer:

<h3>A simple motor converts electrical energy energy into mechanical energy.</h3>

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What is the coefficient for titanium tetrachloride when the equation below is balanced?

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the coefficient of TiCl4 would be 1

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It takes 150 minutes for a middle-aged physics professor to ride his bicycle up the road to Alpe d'Huez in France. The vertical

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Explanation:

Below is an attachment containing the solution.

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3 years ago