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In USA, 53% of total electric power is currently generated by coal-fired power plants. Typically, generation of 1 kWh of electricity by a coal-fired power plant produces 966 g of carbon dioxide (CO2). The world's total wind energy capacity is 39,294 MW. Instead wind turbines generate negligible CO2. Determine the amount of CO2 emission per year that is saved by the use of the wind turbines for replacement of coal-fired power plants.
Determine the velocity of the airplane required for pilot to experience weightlessness at the top of the circular path.
you are given a task of compressing a fixed quantity of gas from P1,T1 to P2,T1. you wish to do this using a polytropic process coupled with a constant pressure P2 heat-transfer process. determine the polytropic process that minimizes the entropy ..
B) Determine the minimum amount of work [kJ ] required to reach this end state. C) If more than the minimum work is actually used, where does this extra energy go? That is what becomes of the extra energy?
A small droplet of liquid detergent, falling through air in a spray drying tower, has its diameter reduced as water evaporates from the surface. If we assume that the temperature of the liquid within the drop remains at 290 K and the dry air is at..
the uniform work platform which has a mass per unit length of 21 kgm is simply supported by cross rods a and b. the
A power outage occurred at a water distribution pump station. Before the power outage the station was pumping with one pump at 6,000 gpm in a 18" diameter Steel Pipe
a heat exchanger is a device in which heat flows between two fluid streams brought into thermal contact through a
calculate the minimum possible magnitude u of the muzzle velocity which a projectile must have when fired from point a
What is the mass of the lead weight, if 100 J of heat is lost from the water after the weight falls a distance of 3 m.
Determine the specified data for water at the states indicated and locate each state on a P-v and T-v diagram.
a golfer hits a golf ball with an initial velocity of 160 fts at an angle of 25deg with the horizontal. knowing that
hi i study in university in greece...i need your help until tomorrow for a mechanical draw.. ltbrgti must draw the
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