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(I) (a) "Room temperature" is often taken to be $68^{\circ} \mathrm{F.}$ . What is this on the Celsius scale? (b) The temperature of the filament in a light bulb is about $1900^{\circ} \mathrm{C}$ . What is this on the Fahrenheit scale?

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a) $20^{\circ} C$b)$3500^{\circ} \mathrm{F}$

Physics 101 Mechanics

Chapter 17

Temperature, Thermal Expansion, and the Ideal Gas Law

Temperature and Heat

University of Washington

Simon Fraser University

Hope College

University of Sheffield

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room temperature is often taken to be 60 degrees Fahrenheit. What is this? And on the social scale, Right. So to convert between Fahrenheit and Celsius, it's something that is is a linear linear equation. S o we have degrees Fahrenheit is equal to degrees Celsius, times by nine, divided by five plus 32. Um, so you can think of this as why eco's m X plus c um, so this is like a straight line graph. One could also think of this Mathematically, we were cool. This annul offset on a fine map. This is a null offset hair, and this is a great idea, slightly unimportant on the other useful thing within the context of this question is going to be to make degree Celsius the subject of the equation, because we are required to work out or go both ways. Eso by subtracting 32 from both sides and multiplying both sides by five open. I'm we get degrees Celsius is equal. Thio, uh, degrees open brackets degrees Fahrenheit. Subtract 32. Uh, no, I don't want to attract 32 on dhe. Multiply by five over night. Hey, eso substituting 68 hit into equation one, um, is a simple case of popping this on the count. Sorry. Substituting 68 hit into equation, too, because we pop 68 into the left hand side hair. I'm popping it on a calculator with either. The first part of 68 degrees Fahrenheit is equal to 20 degrees. Soc is on from second part, substituting 1 900 into equation one. Hey, um, perfect this onto a cab. Later we see that 1 900 degrees Celsius is equal. Thio 3000 400 on DDE, 52 degrees high.

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