(I) ($a$) 18$^\circ$ below zero on the Celsius scale is what Fahrenheit temperature? ($b$) 18$^\circ$ below zero on the Fahrenheit scale is what Celsius temperature?

Answer

A. $0^{\circ} \mathrm{F}$
B. $-28^{\circ} \mathrm{C}$

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Physics 101 Mechanics

Physics

Chapter 13

TEMPERATURE AND KINETIC THEORY

Section 2

Temperature and Thermometers

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Taylor H.

September 18, 2021

18 degrees Celsius below 0

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Video Transcript

Hey, everyone, this is question number six from Chapter thirteen. Spread a This question asks, eighteen below zero on the Celsius scale is what Fahrenheit temperature. So we're going to use just temperature conversion. Two degrees Fahrenheit equals nine over five times T degrees Celsius plus thirty two. So that's gonna be nine over five times eighteen below zero on the Celsius scales going T minus eighteen plus thirty two. Plug that into your calculator and you're going to get minus zero point four, which we can round two zero degrees Fahrenheit. Right? Part B eighteen below zero on the Fahrenheit scale is what Celsius. We just use this equation and number four, but T Celsius equals five over nine. She'LL notice It's just the opposite of what we just did above two degrees Fahrenheit minus thirty two. And that for this problem is going to be five over nine times minus eighteen minus thirty two. That is going to equal. That's going to equal minus twenty seven point seven eight degrees C, which we weaken Round Tio minus twenty eight degrees C.

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