Unit Conversion Help

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melodys

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Is it possible to convert milligrams per square meter per second to teragrams per year? I know how convert milligrams to teragrams but I’m confused on how to cancel out square meter
 
melodys said:
Is it possible to convert milligrams per square meter per second to teragrams per year? I know how convert milligrams to teragrams but I’m confused on how to cancel out square meter
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As you have posted the problem - the answer is NO.

Please post the complete problem as it was given to you - exactly.
 
This is how the problem was given


What is the CO2 emission from cars for the county of Funville annually (in teragrams)

Area of Funville =390,200,000 m^2
CO2 emission = 23.6568988 mg/m^2/s
1 mg = 1,000,000,000,000,000 teragrams
31,536,000 seconds = 1 year
 
melodys said:
This is how the problem was given


What is the CO2 emission from cars for the county of Funville annually (in teragrams)

Area of Funville =390,200,000 m^2
CO2 emission = 23.6568988 mg/m^2/s
1 mg = 1,000,000,000,000,000 teragrams
31,536,000 seconds = 1 year
Click to expand...
That is a horse of a different color!! You have to consider the area of Funville.

CO2 emission = 23.6568988 mg/m2/s

Area of Funville =390,200,000 m2

What is the rate of CO2 emission - in total Funville - per second?
 
So I subtract the rate of emission by the area then convert to teragrams?
 
melodys said:
So I subtract the rate of emission by the area then convert to teragrams?
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Subtraction will NOT eliminate the "m2" term.

In this case the m2 term is in the denominator -

how would you eliminate it to get "total" emission rate (without m2 term)​
 
Would it be

390,200,000m^(2)*(23.6568988mgm^(2))/(1sec)*(1,000,000,000,000,000teragrams)/(1mg)
 
melodys said:
Would it be

390,200,000m^(2)*(23.6568988mgm^(2))/(1sec)*(1,000,000,000,000,000teragrams)/(1mg)
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Is the final units teragram/year? I think not. The units you have are m*mg*^2/sec*teragram/mg = m*mg*teragram/sec
 
I wanted to see if I’m on the step to teragram/year. I feel like I made a few mistake along the way
 
Subhotosh Khan said:
CO2 emission = 23.6568988 mg/m2/s

Area of Funville =390,200,000 m2

What is the rate of CO2 emission - in total Funville - per second?
Click to expand...
the rate of CO2 emission (in total Funville) per second = 23.6568988 (mg/m2)/s * 390,200,000 m2

= 23.6568988 * 390,200,000 mg/s = 9230921911.76 mg/s

the rate of CO2 emission (in total Funville) per year = 9230921911.76 * 31,536,000 [mg/s * s/ year] ....................continue...
 
29110635340926336 * 100,000,000,000,000,000 [mg/y *teragrams/ y] = 2911063534092633600000000000000000 teragrams/y ?
 
How many seconds are there in a year? This is how you do unit conversion. You just multiply by 1.

1year = 1year*1 = 1 year(365days/yr) = 365 days = 365days*1 = 365days(24hrs/day) = 365*24hrs = 365*24hrs*1= 365*24hrs(60min/hrs) = 365*24*60min = 365*24*60*min(60sec/min) = 365*24*60*60sec
 
I got confused when you were explaining the conversion so I need to recalculate and make sure to multiple by 1
 
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