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mote1985 [20]
3 years ago
15

What are three key aerodynamics principles?

Physics
1 answer:
mafiozo [28]3 years ago
8 0

Answer:

A

Explanation:

There are three basic forces in aerodynamics: acceleration, which moves an airplane forward; drag, which holds it back; and height, which keeps it airborne. Lift is generally explained by three theories: Bernoulli's principle, the Coanda effect, and Newton's third law of motion.

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A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40, which
leva [86]

Answer:

t = 2.52 billion \:years

Explanation:

As we know by radioactivity law

N = N_o e^{-\lambda t}

so here we will have

N = 3 mg

N_o = 12 mg

now we will have

3 = 12 e^{-\lambda t}

\lambda t = ln 4

now we also know that

\lambda = \frac{ln2}{1.26 \times 10^6 yrs}

t = 1.26\times 10^6\times \frac{ln4}{ln2}

t = 2.52 billion \:years

7 0
3 years ago
What’s the difference between the resistance of 1,000 feet of aluminum No. 14 wire and 1,000 feet of No. 14 copper wire? A. The
Lapatulllka [165]

the answer is A. The aluminum has 0.84 ohms more resistance.

3 0
3 years ago
If a body p with a positive charge is placed in contact with a body q (initially uncharged), what will be the nature of the char
uysha [10]

If a body p with a positive charge is placed in contact with a body q (initially uncharged), then the nature of charge gained by q must be positive, because rubbing an uncharged body with a charged body or placed in contact with a positive charged body, helps gain a charge to the uncharged body.

There are a variety of methods to charge an object. One method is known as induction. In the induction process, a charged object is brought near but not touched to a neutral conducting object.

Let's know, how a element gain positive charge?

A positive charge occurs when the number of protons exceeds the number of electrons. A positive charge may be created by adding protons to an atom or object with a neutral charge. A positive charge also can be created by removing electrons from a neutrally charged object.

To learn more about Positive charge here

brainly.com/question/2903220

#SPJ4

5 0
2 years ago
PLEASE HELLLLLLLLLLLLPPPPPPPPPP!!!!!! I will give brainliest
alexandr1967 [171]

Answer:

its C. The north pole of one magnet attracts the south pole of another

Explanation:

I JUST TOOK THE TEST

4 0
3 years ago
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As you know, the oceans are a complex system that covers most of the earth, and contains a huge amount of resources. Protecting
Lana71 [14]
It is A. oxygen ( I took the test)
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2 years ago
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