Podcast
Questions and Answers
The mechanic gave us an _______ for the auto repairs.
The mechanic gave us an _______ for the auto repairs.
estimate
Which word is an antonym of 'humiliate'?
Which word is an antonym of 'humiliate'?
- Shame
- Disgrace
- Honor (correct)
- Embarrass
'Identical' means slightly different.
'Identical' means slightly different.
False (B)
The twins liked to wear _______ outfits.
The twins liked to wear _______ outfits.
Which of the following scenarios best illustrates 'improper' behavior?
Which of the following scenarios best illustrates 'improper' behavior?
Provide a synonym for the word improper.
Provide a synonym for the word improper.
The principal reminded us that _______ behavior is not acceptable.
The principal reminded us that _______ behavior is not acceptable.
In the context of voting, what does the word 'poll' refer to?
In the context of voting, what does the word 'poll' refer to?
Where did you see the results of the _______?
Where did you see the results of the _______?
A poll can be used to collect opinions.
A poll can be used to collect opinions.
Which of the words is a synonym for poll?
Which of the words is a synonym for poll?
A nurse tried to _______ the fussy child.
A nurse tried to _______ the fussy child.
'Soothe' means to excite or upset.
'Soothe' means to excite or upset.
Which of the following terms best defines 'vicinity'?
Which of the following terms best defines 'vicinity'?
There is a park in the ________ of our school.
There is a park in the ________ of our school.
'Brisk' means slow and dull.
'Brisk' means slow and dull.
The flag snapped and fluttered in the _______ wind.
The flag snapped and fluttered in the _______ wind.
Which action exemplifies the meaning of 'cherish'?
Which action exemplifies the meaning of 'cherish'?
Our freedom is something we should always safeguard and _______.
Our freedom is something we should always safeguard and _______.
'Considerate' means thoughtless and selfish.
'Considerate' means thoughtless and selfish.
If you are a _______ guest, you might be invited back.
If you are a _______ guest, you might be invited back.
Which action aligns with the meaning of 'displace'?
Which action aligns with the meaning of 'displace'?
Officials feared that the flood would _______ the villagers from their homes.
Officials feared that the flood would _______ the villagers from their homes.
'Downfall' refers to triumph and success.
'Downfall' refers to triumph and success.
To this day, historians argue over what caused the Roman Empire's _______.
To this day, historians argue over what caused the Roman Empire's _______.
Flashcards
Brisk
Brisk
Energetic, lively, fast; cool and fresh.
Cherish
Cherish
To feel or show great love for; to value highly; to take special care of.
Considerate
Considerate
Showing concern for the needs or feelings of others.
Displace
Displace
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Downfall
Downfall
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Estimate
Estimate
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Estimate (Noun)
Estimate (Noun)
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Humiliate
Humiliate
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Identical
Identical
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Improper
Improper
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Poll
Poll
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Soothe
Soothe
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Vicinity
Vicinity
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Study Notes
- Bernoulli's principle explains that a fluid's increase in speed coincides with a decrease in pressure or potential energy.
How Wings Produce Lift
- An airfoil is the shape of an airplane wing, designed to control airflow and maximize lift.
- Lift is the force that counteracts an airplane's weight, enabling it to ascend and stay at a certain height.
- Wings use Bernoulli's principle to generate lift; faster air exerts less pressure.
- The curved upper surface of an airplane wing increases air speed, leading to lower pressure above the wing.
- Higher pressure from slower air below the wing pushes it upward, generating lift.
- The angle of attack is the angle formed between the wing and the incoming airflow.
- Increasing the angle of attack raises lift, but only to a certain limit.
- A stall happens when the angle of attack becomes too steep, causing airflow separation and a sudden loss of lift.
- Air speed, wing area, and air density also affect lift.
- Greater air speed and wing area both increase lift.
- Denser air results in greater lift.
Diagrams
- Airflow lines are closer together above the airfoil, indicating faster airflow and lower pressure.
- The opposite occurs below the wing, with slower airflow and higher pressure.
- An airfoil diagram indicates lift direction with an upward-pointing arrow.
- An angle of attack diagram shows the angle between a wing and the direction of airflow.
- A stall diagram shows airflow separating from the wing's upper surface, causing turbulence and loss of lift.
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