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Derive temp conversion formula

by briteliner
Tags: conversion, derive, formula, temp
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briteliner
#1
Jan22-09, 01:43 PM
P: 66
1. The problem statement, all variables and given/known data

the fahrenheit temp scale is defined to that ice melts at 32 F and water boils at 212 F. Derive formulas for converting fahrenheit to celsius and back.

2. Relevant equations
c=5/9(f-32)

3. The attempt at a solution
ok so i figured that 212-32= 180
and
100-0=100
so the ratio of c/f= 5/9
i don't know how to get the 32 part into the equation
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Dick
#2
Jan22-09, 01:53 PM
Sci Advisor
HW Helper
Thanks
P: 25,228
0C=32F. So a fahrenheit temperature f is (f-32) fahrenheit degrees above 0C. Now just convert the (f-32) fahrenheit degrees to celsius degrees.


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