Calculate % Change E in Simple Steps: E1, E0, and the Formula

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Homework Help Overview

The discussion revolves around calculating the percentage change in a value denoted as E, specifically focusing on the variables E1 and E0, and the formula used to derive the percentage change. Participants are addressing potential errors in calculations and interpretations related to this formula.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are examining the calculations for the percentage change, questioning the accuracy of the original poster's results, and discussing the implications of errors in sign and factors in the calculations. There are requests for more detailed calculations to clarify misunderstandings.

Discussion Status

The discussion is ongoing, with participants providing feedback on the original calculations and expressing confusion over specific errors. Some participants have noted that despite the errors in certain calculations, the answer for one part was correct. There is a sense of urgency as the original poster seeks further assistance before a deadline.

Contextual Notes

Participants are working under a time constraint, as the assignment is due soon. There are mentions of needing to clarify calculations and the potential for miscommunication regarding the problem setup.

Shackleford
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a.jpg

b.jpg


% change E = .0022 - (-.0022) = .0044

[(E1 - E0)/E0] * 100% = % change E

[(E1 - E0)/100] * 100% = % change E

E1 - E0 = change E

E1 = change E + E0 = .0044 + 100 = 100.0044

Originally, I got like 100.44. The professor said I was off by a factor of 10, i.e. E1 = 104.4.
 
Last edited:
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Your answer for #1 is already off by a factor of 10.

You calculation for #2 also has another error and it has the wrong sign.

for #3, only % [itex]\Delta[/itex]E was asked. Amazingly enough,
the answer you got was actually correct even tough #1 and #2 were wrong

If you want further help, try to give a more detailed calculation.
 
willem2 said:
Your answer for #1 is already off by a factor of 10.

You calculation for #2 also has another error and it has the wrong sign.

for #3, only % [itex]\Delta[/itex]E was asked. Amazingly enough,
the answer you got was actually correct even tough #1 and #2 were wrong

If you want further help, try to give a more detailed calculation.

Okay. I'm home now. Here's my work.

Refer first post.
 
Last edited:
I see just a repeat of the question
 
willem2 said:
I see just a repeat of the question

You may have to clear the browser.
 
I must be going crazy, because I don't see how I'm calculating #1 and #2 incorrectly!
 
Shackleford said:
You may have to clear the browser.

it didn't help. You link to 2 jpeg files that contain parts of the question
 
Try it again! I renamed them.
 
No one? It's due tomorrow. :-/
 

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