If a ceiling fan is meant for the ceiling, then why do we put it together not on the ceiling?

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

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

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.