After luke's muscles have adapted to his exercise routine, what does he need to do with his cardiovascular training
workout?
increase his warm-up time
change his running to walking
a greater rest time should be used
add wind sprints

Can you match these to the correct definition

What is friction? how does it affect the motion of an object?

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.