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Let us consider an ultralight airplane (mass 350 kg), which is standing on the runway of an airport. The combustion of the engine provides energy, in the form of work, equivalent to 20,000 KJ. At the same time, the system experiences a heat energy loss of around 5000 KJ. Once the microlight has taken off, and is at an altitude of 1000 meters, the cruising speed is 100 km.h-1. Calculate the internal energy variation (DU) for the process. -2980 KJ -9250 KJ 278 KJ 35860 KJ 11300 KJ

Let us consider an ultralight airplane (mass 350 kg), which is standing on the runway of an airport. The combustion of the engine provides energy, in the form of work, equivalent to 20,000 KJ. At the same time, the system experiences a heat energy loss of around 5000 KJ. Once the microlight has taken off, and is at an altitude of 1000 meters, the cruising speed is 100 km.h-1. Calculate the internal energy variation (DU) for the process. -2980 KJ -9250 KJ 278 KJ 35860 KJ 11300 KJ

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.31P
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Let us consider an ultralight airplane (mass 350 kg), which is standing on the runway of an airport. The combustion of the engine provides energy, in the form of work, equivalent to 20,000 KJ. At the same time, the system experiences a heat energy loss of around 5000 KJ. Once the microlight has taken off, and is at an altitude of 1000 meters, the cruising speed is 100 km.h-1. Calculate the internal energy variation (DU) for the process. -2980 KJ -9250 KJ 278 KJ 35860 KJ 11300 KJ
Transcribed Image Text:Let us consider an ultralight airplane (mass 350 kg), which is standing on the runway of an airport. The combustion of the engine provides energy, in the form of work, equivalent to 20,000 KJ. At the same time, the system experiences a heat energy loss of around 5000 KJ. Once the microlight has taken off, and is at an altitude of 1000 meters, the cruising speed is 100 km.h-1. Calculate the internal energy variation (DU) for the process. -2980 KJ -9250 KJ 278 KJ 35860 KJ 11300 KJ
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