Recent content by sooperdrave
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
thanks for all the help! i think the math is right too. i guess ill find out for sure in class today. ill let you know how it turns out.- sooperdrave
- Post #13
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
(285.384615385kW)(3096hrs)=883550.76923196kWh (883550.76923196kWh)(.34)=300407.261539 this still looks wrong to me...- sooperdrave
- Post #11
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
i actually did write them out...but i used multiplication instead of division. this is only my second week of class, and i have been out of school for a decade. i know this question probably isn't a hard one, but its 1:43am here and my brain hurts from 4 hours of homework. i really do...- sooperdrave
- Post #9
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
think i got it...how does this answer look? $391.037- sooperdrave
- Post #7
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
thanks for your time. I am just not getting it. my last answer was 256682.215384 this just doesn't look right to me. i do get the ratio thing, I am just not sure what to do... 371/.13 = x/100 ? oh well, its only 1 question out of 35 on this assignment. it is difficult for me to...- sooperdrave
- Post #6
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
THANKS! ill try to post better titles in the future. yes it does make sense. i guess I am still not understanding how to get the P-input.- sooperdrave
- Post #4
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
sorry, double post.- sooperdrave
- Post #3
- Forum: Introductory Physics Homework Help
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How much does it cost to run a 371W device for 129 days at 0.13% efficiency?
basic electrical math question. Homework Statement A certain power supply provides a continuous 371W to a load. It is opperating at 0.13% efficiency. In a 129 day period, how much does it cost (in dollars) to run the device if electricity costs 0.34 $ per kWh? Homework Equations im...- sooperdrave
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- Forum: Introductory Physics Homework Help