Converting 20 Joules per Square Meter to Joules per Square Decimeter

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Homework Help Overview

The discussion revolves around converting a measurement of energy density from Joules per square meter to Joules per square decimeter, specifically addressing the conversion of 20 Joules/sm² to 20 Joules/dm².

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the idea of using proportions for conversion and question how to handle the units of time involved in the original measurement. There is uncertainty about the meaning of the units and whether they should be treated as related to time.

Discussion Status

The discussion is active, with participants questioning the assumptions behind the units and exploring different interpretations of the notation used. Some guidance has been offered regarding the potential meanings of the units, but no consensus has been reached on the correct approach to the conversion.

Contextual Notes

There is a mention of converting time units, specifically referencing the number of seconds in a day, which may imply a misunderstanding of the units involved. Participants are also clarifying the meaning of 'd' in the context of the problem.

chrisama
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Homework Statement


How would I convert 20Joules/sm^2 into 20J/dm^2?


Homework Equations



I would probably do some sort of proportion.

The Attempt at a Solution



1 day= 86,400 seconds. So, would I either divide by seconds or multiply by seconds?
 
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If you want to convert 20 J/sm2 then you wouldn't get 20 J/dm2.

You would multiply by 86 400s and get some number other than 20.
 
At first I thought you meant second * metre in the first one. Then I looked at the second one and I thought you meant decimetre.
If the former is the case, then what is d?
If the latter is the case, then how do you want to convert seconds into something unit-less.
 
I think the d is referring to days, since in the solution attempt they have quoted how many seconds there are in a day.
 

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