3 years ago

What happens to cause air to be exhaled from the lungs?

Physics

1 answer:

gladu [14]3 years ago

4 0

Answer:

The lungs contract and then expand

Explanation:

You might be interested in

How many atoms are there

yuradex [85]

Answer:

10^80 i think, scientists say so.

Explanation:

i pretty much just need points and i'm pretty sure you can look this up

4 0

3 years ago

Which of the following temperatures is equivalent to 0 Kelvin?

Pavlova-9 [17]

Answer is B -273 degrees C

6 0

3 years ago

The speed of a wave on a violin A string is 288 m/s and on the G string is 128 m/s. The force exerted on the ends of the string

Katyanochek1 [597]

Answer:

$\dfrac{\mu_A}{\mu_G}=0.197$

Explanation:

given,

Speed of a wave on violin A = 288 m/s

Speed on the G string = 128 m/s

Force at the end of string G = 110 N

Force at the end of string A = 350 N

the ratio of mass per unit length of the strings (A/G). = ?

speed for string A

$v_A = \sqrt{\dfrac{F_A}{\mu_A}}$ .......(1)

speed for string G

$v_G = \sqrt{\dfrac{F_G}{\mu_G}}$ ........(2)

Assuming force is same in both the string

now,

dividing equation (2)/(1)

$\dfrac{v_G}{v_A}=\dfrac{\sqrt{\dfrac{F_G}{\mu_G}}}{\sqrt{\dfrac{F_A}{\mu_A}}}$

$\dfrac{v_G}{v_A}=\dfrac{\sqrt{\mu_A}}{\sqrt{\mu_G}}$

$\dfrac{128}{288}=\dfrac{\sqrt{\mu_A}}{\sqrt{\mu_G}}$

$\dfrac{\mu_A}{\mu_G}=0.197$

5 0

3 years ago

Why is carbon said to provide a “backbone” in many molecules?(1 point)

slega [8]

Answer:

The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules.

3 0

3 years ago

What is the definition of density?

Luba_88 [7]

Answer:

Density is the amount of mass in a specified space. It is a way to measure how compact an object is

Explanation:

6 0

3 years ago