Physics question, ...machines... |
 Feb 10 2005, 06:16 PM
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 Shove it  Group: Member Posts: 496 Joined: Jan 2005 Member No: 91,641  |
On a recent Physics quiz we had this question:
"True or False: An ideal machine will have an efficiency greater than 100%" Now, my teacher was trying to see whether or not we knew that the energy you put into a machine will be equal to or less than the energy coming out of the machine. I got the answer right. However, a few people in my class are arguing that it was an unfair question because an ideal machine would have an efficiency greater than 100%. We think that my teacher should just omit the question because it can go either way. Would you answer true or false? |
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Feb 11 2005, 10:00 AM
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 I can't believe its not "Ryan" Group: Member Posts: 1,981 Joined: Jun 2004 Member No: 21,368 |
A machine is only as efficient as the human that makes it, imagine if it was built on an assembly line, many humans many mistakes. Even with the ideal machine, it still will make errors and make it under 100%.
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Posts in this topic
Heewee Physics question Feb 10 2005, 06:16 PM
omg_melface I'd circle both the answers. =] Feb 10 2005, 06:18 PM Heewee Smartass
Our quizzes are on scantrons anyway s... Feb 10 2005, 06:20 PM omg_melface I'd circle a and b. Feb 10 2005, 10:39 PM x_angawhomps Hey Hillary! Hilary?
Ahem. I'd bubble-in... Feb 10 2005, 10:41 PM smilz2dasun *gasp* your name is hillary too?!
um.. i can... Feb 11 2005, 12:03 AM wind&fire thats impossible to exceed 100% efficiency since t... Feb 12 2005, 03:09 AM mysticalazxn i dunno
i took physic AP in high school. and we ne... Feb 12 2005, 05:27 PM AngelicEyz00 I'd pick false. My guess, is, ideally, I'd... Feb 12 2005, 08:10 PM lAzN YiN YanGl If it could go more, then wouldn't that cause ... Feb 18 2005, 09:38 PM
wind&fire it cant even get up to 100%
Lenz's law states... Feb 18 2005, 11:21 PM |
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