Please help with physics question

Atomic nuclei of almost all elements consist of

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?