A Stream of Gas Consists of N Molecules $\degree$ C) Mnv Sin 30

question 24

Multiple Choice

A stream of gas consists of n molecules. Each molecule has mass m and speed v. The stream is reflected elastically from a rigid surface as shown. The magnitude of the change in the total momentum of the stream is:

• A) 2mnv
• B) 2mnv sin 30 \(\degree\)
• C) mnv sin 30 \(\degree\)
• D) mnv cos 30 \(\degree\)
• E) mnv

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