All categories

3 years ago

Explain how altitude can make you short of breath.

Advanced Placement (AP)

1 answer:

ziro4ka [17]3 years ago

8 0

Answer:

The air at higher altitudes is colder, less dense, and contains fewer oxygen molecules. This means that you need to take more breaths in order to get the same amount of oxygen as you would at lower altitudes. The higher the elevation, the more difficult breathing becomes

Explanation:

You might be interested in

1. The rate at which people enter a movie theater on a given day is modeled by the function S defined by S(t) = 80 -12 cos 6 The

Arlecino [84]

Hi there!

To find the total amount of people that have ENTERED by t = 20, we must take the integral of the appropriate function.

$\text{Amount that entered} = \int\limits^{20}_{10} {S(t)} \, dt \\\\ = \int\limits^{20}_{10} {80 - 12cos(\frac{t}{5})} \, dt$

Evaluate using a calculator:

$= 899.97 \approx \boxed{900\text{ people}}$

To solve, we can find the total amount of people that have entered of the interval and subtract the total amount of people that have left from this value.

In other terms:
$\text{Amount of people} = \int\limits^{20}_{10} {S(t)} \, dt - \int\limits^{20}_{10} {R(t)} \, dt$

We can evaluate using a calculator (math-9 on T1-84):

$\text{\# of people} = \int\limits^{20}_{10} {80-12cos(\frac{t}{5})} \, dt - \int\limits^{20}_{10} {12e^{\frac{t}{10}}+20} \, dt$

$= 899.97 - 760.49 = 139.47 \approx \boxed{139 \text{ people}}$

If:
$P(t) = \int\limits^t_{10} {S(t) - R(t)} \, dt$

Then:

$\frac{dP}{dt} = P'(t)= \frac{d}{dt}\int\limits^t_{10} {S(t) - R(t)} \, dt = S(t) - R(t)$

Evaluate at t = 20:

$S(20) = 80 - 12cos(\frac{20}{5}) = 87.844\\\\R(20) = 12e^{\frac{20}{10}} + 20 = 108.669$

$S(20) - R(20) = 87.844 - 108.669 = -20.823$

This means that at t = 20, there is a NET DECREASE of people at the movie theater of around 20.823 (21) people per hour.

To find the maximum, we must use the first-derivative test.

Set S(t) - R(t) equal to 0:

$80 - 12cos(\frac{t}{5}) - 12e^{\frac{t}{10}} - 20 = 0\\\\60 - 12(cos(\frac{t}{5}) + e^{\frac{t}{10}})= 0$

Graph the function with a graphing calculator and set the function equal to y = 0:

According to the graph, the graph of the first derivative changes from POSITIVE to NEGATIVE at t ≈ 17.78 hours, so there is a MAXIMUM at this value.

Thus, at t = 17.78 hours, the amount of people at the movie theater is a MAXIMUM.

8 0

2 years ago

Following questions:

tekilochka [14]

Answer:

1. The name of the town "tie-dye" built is called Arimatsu

I only know that one. Sorry!

Explanation:

6 0

3 years ago

Explain four steps you can take to improve your writing, OU A Lound this assignment helpu

zheka24 [161]

The answer about improving your writing skills is explained below.

Explanation:

When you are in you education career, or in your professional career, writing skills cannot be neglected. You continuously need to write things down, either in the form of assignments, articles, presentations, letters, agenda, minutes, reports, etc. So your writing skills must be fantastic. Following are some ways that would help you to improve your skills of writing:

Be concise and clear while writing anything
Keep the topic short
Watch your tone while writing
Break down the topic into paragraphs
Stay on the topic, don't move out of context, etc

If you correctly follow the above mentioned ways of writing something, then your writing skills will be improved in a short period of time.

Learn more about Writing Skills at:

brainly.com/question/13411050

#LearnWithBrainly

4 0

3 years ago

Read 2 more answers

Nina can paint two 10 ft. by 12 ft. walls in 3 hours. She has to paint her house, and it has 7 walls this size that need to be p

Aliun [14]

Answer:

i think it's 10:30

Explanation:

7 0

3 years ago

Voyages such as those referred to in the third paragraph were most directly facilitated by which of the following?

olasank [31]

Answer: B . Merchants' understanding of the patterns of the monsoon winds

Explanation:

India faces a very heavy monsoon every year that brings heavy rainfall and very strong winds.

It would make sense that for merchants to have been able to trade in India in the past, they would have had to have a good understanding of the patterns of the monsoon winds so that they would embark on their trade missions with little to no losses.

8 0

3 years ago