65 686
Assignments Done
99,2%
Successfully Done
In October 2018

Answer to Question #45942 in Molecular Physics | Thermodynamics for Azmiah

Question #45942
Tony is driving across the outback in the middle of the night. He finds that he is running
out of petrol and might not make it to the next town. He tells Katie, his passenger, that he’s
going to turn off the headlights in order to save fuel. She tells him this is nonsense; the lights
are powered with electricity, not petrol. Who is right? Discuss.
Expert's answer
The lighting is powered from the battery. However, the battery is charged by a generator which is connected with the transmission of the car. According to the law of conservation of energy the energy that will spend on the light obtained from the fuel burned by car. So this amount of energy would not used for motion. In this case, not using of light is more  frugally. But in other hand if we will not use this energy (will not use light) generator would still work, and energy losses are reduced  insignificant or even stay the same.
If Tony will remove generator it may help, but when generator is not removed it’s better to use light.

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

Assignment Expert
11.09.14, 15:14

Dear Azmiah,
You're welcome. We are glad to be helpful. 
If you liked our service please press like-button beside answer field. Thank you!

Azmiah
11.09.14, 06:41

Thanks.

Leave a comment

Ask Your question

Submit
Privacy policy Terms and Conditions