Awind turbine is 12 m in diameter. the wind blowing through it is blowing at 6.1 m/s. the efficiency of the turbine in 1.5%. the density of the air is 1.225 kg/m^3, what is the power output of the turbine? a. 0.34 kw b. 24 kw c. 0.24 kw d. 0.94 kw e. none of the above and the answer is

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)