A cannon fires a shell that causes a projectile to move down the barrel at a velocity of 740 m/s. What is the speed of the normal shock proceeding down the barrel in front of the projectile if the undisturbed air in the barrel is at 101 kPa and 20°C? How fast would the projectile have to be moving down the barrel if the velocity of the shock ahead of the projectile was 2.5 times the velocity of the projectile?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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39. A cannon fires a shell that causes a projectile to move down the barrel at a velocity
of 740 m/s. What is the speed of the normal shock proceeding down the barrel in
front of the projectile if the undisturbed air in the barrel is at 101 kPa and 20°C?
How fast would the projectile have to be moving down the barrel if the velocity of
the shock ahead of the projectile was 2.5 times the velocity of the projectile?
Transcribed Image Text:39. A cannon fires a shell that causes a projectile to move down the barrel at a velocity of 740 m/s. What is the speed of the normal shock proceeding down the barrel in front of the projectile if the undisturbed air in the barrel is at 101 kPa and 20°C? How fast would the projectile have to be moving down the barrel if the velocity of the shock ahead of the projectile was 2.5 times the velocity of the projectile?
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