explain in law of conservation of energy
2006-09-25 03:38:00 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Physics
yes, but only marginally
2006-09-25 03:39:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The simple answer to your question is YES. Anytime you extract power from an engine or motor, it requires more fuel to operate that engine or motor. It's simply a matter of, "you can't get something for nothing".
In actual application in an automobile there is a point where operating the air conditioning is more efficient than riding with the windows down. It depends on the automobile, that is, how aerodynamically efficient the car actually is. I have read several article in various magazines that indicate the typical speed where this occurs is between 35 and 40 miles per hour. That means that a point between 35 and 40 miles per hour the reduction in wind drag gained by rolling up the windows offsets the increase in fuel consumption caused by extracting the additional power to operate the air conditioning.
If you watch any of the police documentary type shows where the camera crews film actual pursuits conducted by police you will note they typically attain speeds approaching 100 MPH. You will seldom see their patrol cars with the windows down. It is my understanding that most police departments have a "windows up" pursuit policy. The policy is there to eliminate any possibility of something blowing through an open window and distracting the driver. In addition, it makes the car much more "slippery" as it moves through the air.
I tried to answer this as completely as I could. I hope it helps. The additional information is to answer the question you didn't ask, but seemed to be screaming for an answer.
2006-09-25 11:48:54 · answer #2 · answered by gimpalomg 7 · 0⤊ 0⤋
Yes, but the real question is this: Does having the air conditioner on use up more energy then driving with the windows open? If the answer is yes, it would actually be better to drive with air conditioning.
2006-09-25 10:46:18 · answer #3 · answered by bruinfan 7 · 0⤊ 1⤋
I proberly can't ecxplain in the loaw of conservation of evnergy because I am not sure what that is but according to the Myth Busters yes it does increas the fuel consupmtion.
2006-09-25 10:46:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Yes it does to a great extent when u are driving in heavy traffic.But it dos'nt increse fuel consumtion much if u r going at a constant speed like on highway.
2006-09-25 10:50:12 · answer #5 · answered by AJ_911 2 · 0⤊ 0⤋
yes, depending on the vehicles engine capacity to how much xtra fuel you will use.
2006-09-25 10:49:31 · answer #6 · answered by basics12002 1 · 0⤊ 0⤋
yes it put a drag on the motor,and makes it work harder
2006-09-25 10:41:26 · answer #7 · answered by john doe 5 · 0⤊ 0⤋
yes, by approx 15%.
2006-09-25 10:46:06 · answer #8 · answered by joost12 2 · 0⤊ 0⤋
yea
2006-09-25 10:40:54 · answer #9 · answered by s 2 · 0⤊ 0⤋
yep, sure does
2006-09-25 10:45:26 · answer #10 · answered by jk2ambmw 2 · 0⤊ 0⤋