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m_a_m_a [10]
4 years ago
10

The Doppler effect occurs when a source of sound moves

Physics
1 answer:
Dmitrij [34]4 years ago
4 0

The Doppler effect occurs when a source of sound or light
moves either toward or away from the observer.

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20 points pls help...<br><br> Does the sun orbit the Earth once a day?<br> True or False
CaHeK987 [17]

Answer:

False.

Explanation:

First off, the Earth orbits the sun. The sun does not orbit the Earth.

Also, it takes 365 days (1 year) for the Earth to orbit the sun.

I hope this helped.

4 0
3 years ago
Both deltas and mountains are
dusya [7]

the best option would be d.) examples of constructive erosion.


3 0
3 years ago
1. In a series circuit, if one bulb goes out the other blubs will stay lit.
RideAnS [48]
I think is False
I think is False
5 0
3 years ago
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While researching scuba diving, Pablo reads how hot a tank should get while being filled with air. Which law best explains why t
Lady_Fox [76]

Answer:

Gay-Lussac’s law, because as the pressure increases, the temperature increases

Explanation:

First of all, we can notice that the volume of the tank is fixed: this means that the volume of the air inside is also fixed.

This means that in this situation we can apply Gay-Lussac's law, which states that:

"for a gas kept at constant volume, the pressure of the gas is proportional to the absolute temperature of the gas".

Mathematically:

p\propto T

where p is the pressure in Pascal and T is the temperature in Kelvin.

In this case, the tank is filled with air: this means that the pressure of the gas inside the tank increases. And therefore, according to Gay-Lussac's law, the temperature will increase proportionally, and this explains why the tank gets hot.

5 0
3 years ago
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Reacting with water in an acidic solution at a particular​ temperature, compound A decomposes into compounds B and C according t
Diano4ka-milaya [45]

Answer:

after  t = 3 hours compound A remain 0.396 M

t = 12.98 hours

Explanation:

P = P_0*e^(-kt)  

t = 30 minutes = 30/60 hours = 0.5 hours

and P_0 = 0.60M

and P after t = 0.5 hours is 0.56 M

(0.56/0.6) = e^(-kt)

0.933 =e^(-kt)

k = 0.138

P = P_0*e^(-0.138t)

Now after  t = 3 hours,

P = 0.6* e^((-0.138)*3) = 0.396 M

time  when P = 0.1 M

0.1 = 0.6*e^(-0.138t)

t = 12.98 hours

8 0
3 years ago
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