D= 50 cm
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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Question
The helium-filled balloon in Fig. is tethered at 20°C
and 1 atm with a string of negligible weight and drag. The
diameter is 50 cm, and the balloon material weighs 0.2 N,
not including the helium. The helium pressure is 120 kPa.
Estimate the tilt angle θ if the airstream velocity U is (a) 5 m/s
or (b) 20 m/s.
Transcribed Image Text:D= 50 cm
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