Water waves are generated every 5 seconds at a swimming pool. What is the frequency of these waves in Herts?

0.2 Hz

Explanation:

Frequency = no. of waves in 1 second

1 wave produced in 5 seconds

1/5 waves are produced in 1 second

Therefore No. of waves in 1 second = 0.2 waves

therefore frequency is 0.2 Hz

Hope it helps...

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.