2. An airplane with a Clark Y airfoil cross-section weighs 3500 Ibs. The chord length is 6ft and the wingspan is 36 ft. Determine the: a) Minimum speed and power to take off, if the angle of attack is is12.4°. b) Power to cruise at 150 mph at an altitude of 15,000 ft. c) % increase in power if the plane is cruising 150 mph at 10,000 ft. d) Stall speed at landing

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Wind Energy

Wind energy is a renewable energy source that is used to generate electricity by wind power. The term, wind power, means utilization of kinetic energy of wind to generate electricity. Wind energy is termed renewable source energy because it can never be exhausted. There are other renewable energy sources, such as solar energy, geothermal energy, hydropower energy, and so on. All of them contribute to power the thermal energy stations to generate electricity.