A drone moves at 10 m/s approaching a stationary observer. The frequency of the drone is 380 Hertz and the speed of the sound in the air is 400 m/s. What is the frequency of the sound waves heard by the observer

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

What are some important factors to consider when choosing a warm-up before your workout?