1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ksivusya [100]
3 years ago
11

(PLEASE HELP ASAP) (WILL GIVE BRAINLIEST AND THANKS) As an airplane rises through the atmosphere, machines cause the pressure in

side the cabin to decrease. As the airplane descends toward Earth, machines cause the pressure inside the cabin to increase. Based on your observations from the Can Crush Lab, explain why these changes in pressure are necessary.
Biology
1 answer:
34kurt3 years ago
6 0
Well, from what I know..
In high elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. Most of the atmospheres molecules are held close to the earth's surface by the force of gravity and hence air pressure decreases rapidly at first, then more slowly at higher levels.
Sooooo if the pressure in an airplane cabin isn't changed, it can cause injury or harm to passengers and oxygen equipment is required above 8,000 altitude.
You might be interested in
List at least four reasons why it is difficult to send manned space flights to parts
icang [17]
1 you run out of fuel 2 it takes a long time 3 it’s hard to get back 4 the conditions are constantly changing making it harder to predict what could happen. Look at Apollo 12 as a example
3 0
2 years ago
What prediction can you make about why oil and water interact?
Dmitry_Shevchenko [17]
They will not mix because the oil does not have a chemical charge large enough to break the hydrogen bonds between the water molecules.  
3 0
3 years ago
Description of Vegetative​
marishachu [46]

Answer:

Vegetation def is: growing plants, or a life without physical, mental or social activity

Vegetative depends on the context. Mainly just means without brain activity

7 0
3 years ago
A graduate student in geology who grew up in Florida (near the southernmost tip of the United States) gets to accompany her rese
butalik [34]

Answer:

The following will be different at the North Pole from the way she remembers the sky in Florida:

(1) The celestial equator is on the horizon.

(2) The celestial pole is overhead

(3) The way the stars rise or set.

6 0
3 years ago
In a certain population of fruit flies, 640 out of 1000 have red eyes, while the remainder have sepia eyes. The sepia eye trait
irga5000 [103]

Answer:

The correct answer is 160.

Explanation:

Based on the given question, the total number of fruit flies is 1000, of which red eye flies are 640. Thus, the number of sepia eye flies will be 1000-640 = 360.  

On the basis of the Hardy-Weinberg equation, p+q = 1, in which p is the rate of recurrence of one allele, that is, dominant and q is the rate of recurrence of the other allele, that is, recessive.  

q^2 for the population is 360/1000 = 0.36, q = 0.6.  

Therefore, p = 1-q = 1-0.6 = 0.4.  

The frequency of homozygous dominant allele is denoted by p^2 = 0.16.  

Hence, the number of homozygous dominant for red eye color would be 16% of 1000 which will be equal to 160.  

5 0
3 years ago
Read 2 more answers
Other questions:
  • A scientist formed a theory based on an experiment he conducted. Many years later, researchers studied his experiment to see if
    12·1 answer
  • Helpppppppppppp plzzzzzzzzzzzzzzzxx
    8·2 answers
  • The law of segregation states that allele pairs separate during gamete formation. How then do we have two alleles for a trait?
    10·1 answer
  • At which hotspot would you view Polaris at an altitude of 45°?
    14·1 answer
  • The reason why Europe has a warmer climate than Canada, even though they are both at the same latitude is because of the ...
    13·1 answer
  • PLEASE HELP ASAP!!!
    8·2 answers
  • Carbon dioxide moves through the plasma membrane through the process of
    14·1 answer
  • WHAT IS The 2nd phase of mitosis
    8·1 answer
  • Write down at each of the steps of the digestive path the type of change occurring (physical or chemical).
    12·1 answer
  • Proteins that are functionally less important for the survival of an organism generally evolve _____ more important proteins.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!