Review Test 2
last update: Tuesday, January 19, 2021 17:42
Finding power in the wind
Finding Circular Area
Finding Cylindrical Volume
Density of Air = 1.2 kg/m3
Kinetic Energy (K.E)
Calculate flow rate of water in m/s to provide certain or needed electric power
Betz Limit equation to find power output of a wind turbine
Electrical Energy requirements for a water pump to lift water a certain height.
greek letter (rho) = density
density of water = 1000 kg/m^3
g (free fall acceleration on a planet)
How many seconds seconds in one hour?
Calculating the diameter of windmill blades
Pumping Water through a height in a period of time.
Finding Speed of Sound = c
c = sq root of [ ( k ) ( R ) ( T ) ( 1000 m^2/s^2 / 1(kJ/kg) ) ]
k = specific heat ratio of ideal gas at specified temperature (given)
R = gas constant = 0.287 kJ / (kg * K)
T = temperature in Kelvin
Finding the "Ma" Number #
Ma # = Velocity / Speed of sound = V / C