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user100 [1]
3 years ago
11

What is another word for the sound barrier?

Chemistry
2 answers:
rodikova [14]3 years ago
7 0

Answer:

Speed of sound

Explanation:

The sound barrier or sonic barrier is the sudden increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound.  Therefore, sound barrier and speed of sound are synonyms.  In dry air at 20 °C (68 °F), the speed of sound is 343 meters per second (about 767 mph, 1234 km/h or 1125 ft/s).

8090 [49]3 years ago
3 0

Answer:

The Answer is B. Destructive Interference

Explanation:

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I need help please <33
Aliun [14]

Answer:

Option 3 is correct.

The atomic nucleus of each element has a unique number of protons. Therefore, the energy of the electron layers of the atoms of each element is unique.

If we have the energy released from each electron transfer between the layers of the atom, we can identify the element.

4 0
2 years ago
How many Fe atoms and how many moles of Fe atoms are in 500.g of iron?
ser-zykov [4K]
MFe: 56 g/mol
..........

56g ----- 1 mol
5g ------- X
X = 5/56 = 0,089 moles of Fe

56g ----- 6,02×10²³ atoms
5g ------- X
X = (5×6,02×10²³)/56
X = 0,5375×10²³ = 5,375×10²² atoms of Fe

:•)
3 0
3 years ago
Which of the following are reactants in the equation below? Select all that apply.
Paha777 [63]

Answer:

Zinc, copper sulfate

Explanation:

The reactants are the ones on the left side

8 0
3 years ago
Which best describes what is represented by images 1 and 2?
arlik [135]

the answer is

Image 1 shows a monomer, and Image 2 shows a polymer.

5 0
3 years ago
Read 2 more answers
Convert 3.9x10^5mg to dg
bonufazy [111]
Thank you for posting your math problem here. To convert 3.9x10^5mg to dg the answer is <span>3.9 x 10^3 dg. Below is the solution: 

Solution:

</span><span>1mg=0.01dg 
</span><span> dg= 3.9 X 10^5mg
</span>dg = <span>(3.9 X 10^5) x 0.01
dg = </span><span>3.9 x 10^3 </span>
7 0
3 years ago
Read 2 more answers
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