The answer would be Newton’s Second Law
Answer:
1.6 x 10^{-19} Coulombs
Explanation:
In Physics, the standard unit of measurement of a charge is Coulombs and it's denoted by C. Also, the symbol for denoting a charge is Q.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
The minimum charge on any object such as an electron cannot be less than 1.6 x 10^{-19} Coulombs and it's usually referred to as the fundamental unit of charge.
Answer:
We have to show surface area ,with few conditions that is by considering Force and Pressure to be respectively.
Explanation:
The atmospheric pressure is on Earth's surface.
The magnitude of the force exerted on a person by the atmosphere is .
Now to calculate surface area we can find it from and re-arranging it to.
So plugging the values,
Surface area
Hence from the above calculations we can say that surface area is .
So the surface area of an average person can be said to have , using the concept of pressure and force.
Answer:
<u>Sound barrier
:</u>
The sound barrier is defined as a <u><em>"barrier"</em></u> that travels in all directions (because we are talking about sound waves) at the typical speed of sound in the air (1235.5 km/h). It should be noted that the name of <u><em>"barrier"</em></u> was given because it was previously considered a physical limit that prevented large aircrafts from traveling at supersonic speed (a situation that was evident in fighter planes during World War II, having problems with compressibility when flying at high speeds). However, <u>today many planes are capable of overcoming that barrier without problems.
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<u>When the Sound barrier is broken
:</u>
When an airplane approaches the speed of sound (defined in the upper lines), <u>it can be observed how the shape of the air that flows around it changes, because the wave fronts are grouping more and more.
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Then, when the plane exceeds the speed of sound (the sound barrier), something known as sonic boom or sonic explosion occurs, which is nothing more than what our ears can hear when the shock wave caused by the plane exceeds the speed of sound.
It should be noted that this explosion can be annoying to the human ear.