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As long as the light remains in the motor oil, nothing happens to its speed.
That means, of course, that the velocity (and the speed) doesn't change.
This happens because when you blow air over the paper,the air pressure above the paper reduces.The air pressure below the paper remains the same.As the pressure below the paper is greater than that above the paper it pushes the paper up.The faster the air moves ,the more is the drop in pressure in that region
Speed of sound in air is dependent on the air pressure, and air pressure is dependent on height above sea level. Up high, pressure is lower and speed of sound is different.
Air pressure drops and wind speed increases.
remains constant
remains constant
As long as the light remains in the motor oil, nothing happens to its speed.
The speed increases and the pressure decreases.
The speed increases and the pressure decreases.
If the frequency remains constant, then the wavelength increases.
That means, of course, that the velocity (and the speed) doesn't change.
Velocity can change even if speed is constant.
if the speed increases the frequency increases if the speed decrease the frequency decreases
is move themselves
The wavelength stays constant.
This happens because when you blow air over the paper,the air pressure above the paper reduces.The air pressure below the paper remains the same.As the pressure below the paper is greater than that above the paper it pushes the paper up.The faster the air moves ,the more is the drop in pressure in that region