Physics
At what temperature do the Fahrenheit and Celsius scales give the same reading?

0 degreees
212 degrees
32 degreees
-40 degreees

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Physics
It is more difficult to walk on a sandy road than on a concrete road because

the friction between sand and feet is less than that between concrete and feet.
sand is soft and concreter is hard.
the friction between sand and feet is more than that between concrete and feet.
the sand is grainy but concrete is smooth.

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