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sashaice [31]
2 years ago
9

Why is the speed of different sounds in a single medium remain the same though wavelength is different?

Physics
1 answer:
WINSTONCH [101]2 years ago
6 0

Answer:

I think it's because the refractive index of that medium is constant

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Answer:

the answer is C.

Explanation:

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A circuit has a current of 1.2 A. If the voltage decreases to one third of its original amount while the resistance remains cons
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When resistance is constant, current is proportional to voltage. When 1/3 the voltage is applied, 1/3 the current will result.

(1/3)*(1.2 A) = 0.4 A

The resulting current will be 0.4 A.
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The Earths magnetic field deflects the flow of current from?
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<span>Most of the earth's fresh water is stored as ice in the Arctic and Antarctic regions of the globe.</span>
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3 years ago
Small rockets are used to make small adjustments in the speed of satellites. One such rocket has a thrust of 42 N. If it is fire
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To solve this problem we will apply the concepts related to Newton's second law that relates force as the product between acceleration and mass. From there, we will get the acceleration. Finally, through the cinematic equations of motion we will find the time required by the object.

If the Force (F) is 42N on an object of mass (m) of 83000kg we have that the acceleration would be by Newton's second law.

F = ma \rightarrow a = \frac{F}{m}

Replacing,

a =\frac{42N}{83000kg}

a =5.06*10^{-4}m/s^2

The total speed change

\Delta v = v_f -v_0 \rightarrow v_f =\text{Final velocity and } v_0 = \text{Initial velocity } we have that the value is 0.71m/s

If we know that acceleration is the change of speed in a fraction of time,

a= \frac{\Delta v}{t} \rightarrow t = \frac{\Delta v}{a}

We have that,

t= \frac{0.71m/s}{5.06*10^{-4}m/s^2 }

t = 1403.16s

Therefore the Rocket should be fired around to 1403.16s

7 0
2 years ago
What do fossils provide evidence for?
Lapatulllka [165]

Answer:  B. the history of life in the geologic past

Explanation:

B. the history of life in the geologic past because fossils help us by telling what type of animals were alive back then ex ) a dinosaur fossil shows us what type of dinosaur it was

PLEASE MARK BRANILIEST

7 0
2 years ago
Read 2 more answers
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