Consider the continuity equation ( frac{ partial rho}{ partial t}+ nabla.( rho vec{V})=0 ). For a steady flow this equation becomes ___________

Consider the continuity equation ( frac{ partial rho}{ partial t}+ na

1.	Consider the continuity equation ( frac{ partial rho}{ partial t}+ nabla.( rho vec{V})=0 ). For a steady flow this equation becomes ___________
A.	( nabla.( rho vec{V})=0 )
B.	( nabla.( vec{V})=0 )
C.	(div( vec{V})=0 )
D.	(curl( vec{V})=0 )
Answer» B. ( nabla.( vec{V})=0 )

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