a passenger is smoking in the backseat of a moving car. To remove the smoke, the driver opens his window just a bit. Explain why the smoke is drawn to and out of the driver's window
2007-10-01 02:00:04 · 7 answers · asked by i-sena 1 in Science & Mathematics ➔ Physics
If the car is in motion, the air outside the car is moving with a velocity, relative to that of the car. Benoulli's theorem states that this creates a low pressure region on the outside of the car. then the principle of High pressure -> low pressure takes over.
The perils of living in a universe where effect follows cause
2007-10-01 02:06:06 · answer #1 · answered by Anonymous · 2⤊ 0⤋
The motion of the car is creating a pressure imbalance with
the outside air. Like air moving over an airplane wing, the air moving around the car has less pressure than the air inside the car, so a vacuum is created when you open a window, drawing the air out.
Eventually the pressure drop inside the car will cause your ears to pop, unless you open a vent to let fresh air into the car.
2007-10-01 09:09:21 · answer #2 · answered by righteousjohnson 7 · 1⤊ 0⤋
Because that is the only suction in the car to remove smoke. You are driving at a speed for more smoke to be drawn out of that window
2007-10-01 09:04:11 · answer #3 · answered by who_me 2 · 0⤊ 0⤋
That's just like hypertonic and hypotonic solution thingy in Biology!
2007-10-01 09:20:23 · answer #4 · answered by Anonymous · 0⤊ 0⤋
it is really not healthy to smoke anywhere.
the back seat of a car exposes everyone in the car to second hand smoke.
2007-10-01 09:14:54 · answer #5 · answered by DanE 7 · 1⤊ 2⤋
circulation of the air..
2007-10-01 09:03:13 · answer #6 · answered by Anonymous · 0⤊ 0⤋
its due to grahams law of effusion of gases.
2007-10-01 09:04:44 · answer #7 · answered by Anonymous · 1⤊ 1⤋