The loud speaker A and B are driven by the same amplifier and emit sinusoidal in-phase. The frequency of the waves emitted is 86 Hz. You are standing 10.0 m from speaker A. Calculate the closes you can be to speaker B and be at a point of destructive interference (hear nothing). The speed of sound travel in air is 344 m/s

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.