A sound wave has a wavelength of 0.450 meters if it’s speed in cold air is 330 meters per second what is the wave’s frequency

733.3Hz

Explanation:

V=fx

where V is velocity of sound wave ; 330m/s

f is frequency of sound wave ; unknown

x is wavelength of sound wave; 0.450m

substituting the values

V=fx

330=0.450f

f=733.3

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator