Which of these terms represent the flow of fluid into and out of the o – McqOptions

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1.	Which of these terms represent the flow of fluid into and out of the observation model?
A.	( frac{ partial( rho Phi)}{ partial t} )
B.	(div( rho Phi vec{u}) )
C.	div( grad )
D.	grad
Answer» C. div( grad )

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