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2 years ago

How is the surface area to volume ratio maximized in lungs?

1 answer:

8 0

There are branches on the lungs making it resemble a tree. These branches have sacs called alveoli that look like grape bunches. The combination of branching and alveoli maximize lung surface area.

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Please Help me in this question..

Vlad [161]

Answer:

1 different

Explanation:

2 light

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5dark

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8 0

2 years ago

The blackbody radation emmitted from a furnace peaks at a wavelength of 1.9 x 10^-6 m (0.0000019 m). what is the temperature ins

krek1111 [17]

Answer:

Temperature, T = 1542.10 K

Explanation:

It is given that,

The black body radiation emitted from a furnace peaks at a wavelength of, $\lambda=1.9\times 10^{-6}\ m$

We need to find the temperature inside the furnace. The relationship between the temperature and the wavelength is given by Wein's law i.e.

$\lambda\propto \dfrac{1}{T}$

$\lambda=\dfrac{b}{T}$

b = Wein's displacement constant

$\lambda=\dfrac{2.93\times 10^{-3}}{T}$

$T=\dfrac{2.93\times 10^{-3}}{\lambda}$

$T=\dfrac{2.93\times 10^{-3}}{1.9\times 10^{-6}\ m}$

T = 1542.10 K

So, the temperature inside the furnace is 1542.10 K. Hence, this is the required solution.

3 0

3 years ago

4. A high school athlete runs 400 m in 52.20 sec. What is his speed in mph? 14100 1110

Serggg [28]

Answer:

28,800m/p second

Explanation:

Calculate the distance per second so, 400m/50 s= 8m/p second now knowing the speed/hour and knowing an hour has 3,600 seconds,multiply it by 8 then you will get 28,800m/p second, or 28.8km/h

3 0

2 years ago

The heater in the thermostat control circuit in the cooling mode is active when the ____.

Gnoma [55]

Here is the correct answer that would best complete the given statement above. The heater in the thermostat control circuit in the cooling mode is active when the heat anticipator in the thermostat control circuit is in the heating mode. Hope this is the answer that you are looking for.

7 0

2 years ago

The water waves below are traveling along the surface of the ocean at a speed of 2.5 m/s and

gavmur [86]

Answer:2 seconds

Time= Distance/speed

=50/25

=2seconds

3 0

2 years ago