1. An engine rejects 200kW when running at a thermal efficiency of 22%. The calorific value of the fuel used is42MJ/kg. Determine(i)the heat received by the engine;(ii)the power output in kW, and(iii)the mass of fuel used/h2. A 20kg block of iron at 50°C is dropped into an insulated tank which contains 0.5m of water at 25°C. If thespecific heat of the iron, Cpiron, is 0.45 kJ/kg°C and the specific heat of the water, Cpwater, is 4.184 kJ/kg'C.Determine:(a)mass of the water;s)(b) the temperature at which thermal equilibrium is reached, andFor equilibrium AUsystem-AUron+AUwater 0(c)the amount of energy added to the water.AU=mwaterCpwater (tequili"twater)waterThe barometer of a mountain hiker reads 910mbars at the beginning of the hike and 710mbars at the end.3. (а)Determine the vertical distance climbed. You can assume an average air density of 1.2kg/m4.

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1. An engine rejects 200kW when running at a thermal efficiency of 22%. The calorific value of the fuel used is 42MJ/kg. Determine (i) the heat received by the engine; (ii) the power output in kW, and (iii) the mass of fuel used/h

1. An engine rejects 200kW when running at a thermal efficiency of 22%. The calorific value of the fuel used is 42MJ/kg. Determine (i) the heat received by the engine; (ii) the power output in kW, and (iii) the mass of fuel used/h

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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