a continuous tone of 570 hz is generated by a speaker the sound travels into a tube that splits into two segments one longer than the other the sound waves recombine before being detected by a microphone the speed of sound in air is 345 m/s what is the minimum difference in the lengths of the two paths to produce destructive interference at the microphone

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.