Answered: 1) Air with a density of 0.45 kg/m3…

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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1) Air with a density of 0.45 kg/m³ enters an experimental jet engine at a rate of 175 m/s. The inlet area of the engine is 7.0 ft². After fuel is burned, the air and combustion byproducts leave the engine with a velocity of 695 m/s through an outlet area of 6.0 ft². What is the average density of the gas exiting the engine? Express your answer in kg/m³, slugs/ft³, and lbm/ft³.

Calculate the mass moment of inertia of the thin ring shown in the accompanying diagram. Express your answer in lbm · ft², lbm · in², and slugs · ft². (Assume the axis of rotation is into the page through the center of the ring.)

m = 0.8 slugs

radius is 9 in.

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