During World War I,Germany Used a "Big Bertha" Cannon to Hurl

question 114

Multiple Choice

During World War I,Germany used a "Big Bertha" cannon to hurl shells into Paris 30 miles away.This gun also had a very long barrel.What was the reason for using a long barrel in these guns?

• A)to exert a larger force on the shells
• B)to reduce frictional losses
• C)to allow the force of the expanding gases from the gunpowder to act for a longer time
• D)to increase the force exerted on the bullet due to the expanding gases from the gunpowder
• E)to reduce the force exerted on the bullet due to the expanding gases from the gunpowder

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