In a steam power station having a maximum demand of 20 mw the boiler efficiency and turbine efficiency are 80% and 90% respectively. if the coal consumption is 1 kg, per unit of energy generated and cost of coal is rs. 40 per metric tonne; determine (a) the thermal efficiency of power station. (b) cost of coal per year. annual load factor is 50%.

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This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.