An echo is a reflection of sound against another surface. Suppose you are standing on one side of a canyon and you
yodeled. Suppose the temperature is 20°C and the canyon is 750 m wide, how long does it take for you to hear the echo
of your yodel?
10-1 Temperature and Expansion. 135 ... text, the laboratory work that you do, or your physics teacher. ... Assume that the speed of sound in air is 340 m/s. How.
