You are in a car, sitting at one end of a long straight track. At the other end of the track is a loudspeaker emitting sound waves at 265 Hz. You step on the gas and accelerate steadily toward the loudspeaker with acceleration a = 2 m/s2 ., Your passenger is holding a tube filled with air. In the first minute of the car's acceleration, she hears the tube resonate with the sound waves from the loudspeaker at t = 12.94s, t = 32.36s, and t = 51.77s. How long is the tube, and is it open or closed?