Temperature scale: When will Celsius and Faranheit scales agree with each other?

Click For Summary
SUMMARY

The temperature at which the Celsius and Fahrenheit scales agree is -40 degrees. This conclusion is derived from the equations TF = TC * (9/5) + 32 and TC = (TF - 32) * (5/9). By setting TF equal to TC and solving the equation, the result confirms that both scales intersect at -40°C. The discussion also highlights a common error in the second equation provided.

PREREQUISITES
  • Understanding of temperature conversion formulas
  • Familiarity with algebraic manipulation
  • Basic knowledge of Celsius and Fahrenheit scales
  • Awareness of the Kelvin scale for context
NEXT STEPS
  • Study temperature conversion formulas in detail
  • Practice solving algebraic equations involving temperature
  • Explore the historical context of temperature scales
  • Learn about the Kelvin scale and its applications in science
USEFUL FOR

Students studying physics or mathematics, educators teaching temperature conversions, and anyone interested in understanding the relationship between different temperature scales.

FountainDew
Messages
12
Reaction score
0

Homework Statement


Calculate the one temperature at which Fahrenheit and Celsius thermometers agree with each other.

Homework Equations


TF = TC * (9/5) + 32°C
TC = ( TF + 32 ) * (5/9)
TK = TC + 273.15

The Attempt at a Solution


*Shrug* I can't even understand how to set it up...

4. The answer
-40°C
 
Physics news on Phys.org
FountainDew said:

Homework Statement


Calculate the one temperature at which Fahrenheit and Celsius thermometers agree with each other.

2. Homework Equations
TF = TC * (9/5) + 32°C
TC = ( TF + 32 ) * (5/9)
TK = TC + 273.15

Forget Kelvin

If

TC = ( TF - 32 ) * (5/9)

Simply set TF to TC

TC = ( TC - 32 ) * (5/9)

and solve.

Note your second equation is in error.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
4K
Replies
8
Views
5K
  • · Replies 1 ·
Replies
1
Views
4K
Replies
4
Views
2K
  • · Replies 5 ·
Replies
5
Views
4K
Replies
2
Views
3K
  • · Replies 10 ·
Replies
10
Views
12K
  • · Replies 5 ·
Replies
5
Views
6K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K