Imagine that you are given two plastic pipes, identical except that one is open to the air at both ends (like the pipe in Studio Lab 1), while the other is closed at one end by a plastic cap. You inject a sound into each pipe by placing a small loudspeaker near an open end (as you did in Studio Lab 1) and then adjust the frequency produced by the loudspeaker. Which pipe produces a loud sound (i.e. a standing wave in the pipe) at the lowest frequency? Explain why. This experiment was originally conducted in a room with the temperature at 30C. The experiment was repeated in another room where the temperature was only 20C.