Carbon tetrachloride flows through a horizontal $2\mathrm{.}45-$mm$-$diameter tube to which are attached two pressure taps a distance $1\mathrm{.}2$ m apart.

a$)$ What is the maximum pressure drop, in kPa $,$ allowed if the flow is to be laminar? $($Assume the critical Reynolds number is $2100.)$ number is $2100.)$

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