Sound waves are traveling through the air. every ½ second, the sound waves pass a detector. which of the following choices correctly describes the period and frequency of these waves?

the frequency is ½ second, and the period is 2 hz.
the period is ½ second and the frequency is ½ hz.
the period is ½ second, and the frequency is 2 hz.
the period is 2 s, and the frequency is 2 hz.

Iwould sure like to answer your question but i honestly just don’t know

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

Answerboth technicians (a) and (b);