Aleaky faucet drips 40 times in 30.0 s. what is the frequency of the dripping?

The answer is 40/30 which is 1.3 Hz. 

Hope this helps. :)

    5.5 n======    assuming that      we have      m = 0.145 kg    a = 38 m/s²therefore    5.51 n, but two significant figures.final answer: 5.5 n

Magma  is composed of molten rock and is  stored  in the earth's crust. lava is  magma  that reaches the surface of our planet through a volcano vent.