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Zanzabum
3 years ago
11

What is the answers to these questions?

Chemistry
1 answer:
serious [3.7K]3 years ago
4 0

2. B

3. B

4. A

5. C

6. B

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If the take off velocity of an airplane on a runway is 300 km /hr with an acceleration of 1 m/s2. What is the take off time of t
Rama09 [41]
<h3>Answer:</h3>

83.33 seconds.

<h3>Explanation:</h3>

<u>We are given;</u>

  • Take off velocity as 300 km/hr
  • Acceleration as 1 m/s²

We are required to calculate the take off time of the airplane.

<h3>Step 1: Convert velocity from km/hr to m/s </h3>

We are going to use the conversion factor.

The conversion factor is 3.6 km/hr per m/s

Therefore;

Velocity = 300 km/hr ÷ 3.6 km/hr per m/s

             = 83.33 m/s

<h3>Step 2: Calculate the take off time</h3>

We know that;

v = u + at

where, u is the initial velocity, v the final velocity, a the acceleration and t is time.

But, initial velocity is Zero

Therefore;

83.33 m/s = 1 m/s² × t

Thus;

time = 83.33 m/s ÷ 1 m/s²

       = 83.33 seconds

Therefore, the take off time is 83.33 seconds.

5 0
3 years ago
TWO QUESTIONS! NEED HELP PLEASEEE
castortr0y [4]

First question I believe is B

The second one is also B

I really hope it helped

8 0
4 years ago
What is true of enzymes? They only speed up reactions. They speed up or slow down any reaction in a living thing. They act as ca
muminat
They act as catalysts
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3 years ago
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What happens to the atoms and molecules in a substance as its temperature increases?
lana [24]
The molecules and atoms vibrate faster. As atoms vibrate faster the space between atoms also increases.
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3 years ago
Which statements differentiate DNA and RNA? Select three options.
Morgarella [4.7K]

Answer:

A.) DNA is a double helix, and RNA is a single strand.



C.) DNA is involved only in transcription, and RNA is involved in both transcription and translation.



E.) DNA does not have uracil as a nitrogen base, but RNA does have uracil as a nitrogen base.











Explanation:

Have a great rest of your day
#TheWizzer

3 0
2 years ago
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