An ocean wave has a wavelength of 15 meters and is moving at 2.5 m/s. what is the frequency

frequency is .167/s for this wave

wave speed=frequency×wave length

frequency=15/2.5

=6

i hope this helps

a) cold, dry

explanation:

continental polar masses are cold and dry air masses because the cold air cannot hold much moisture. as they move into warmer air, they can trigger precipitation.

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.