1.

HOW_IS_THE_LENGTH_OF_THE_SURFACE_CALCULATED_IN_CASE_OF_COUNTERCURRENT_SETTLING??$

A. L<sub>p</sub>=wV<sub>Ɵ</sub>/ v cos Ɵ
B. L<sub>p</sub>=(V<sub>Ɵ</sub> – V sinƟ)/ v cos Ɵ
C. L<sub>p</sub>=w(V<sub>Ɵ</sub> – V sinƟ)
D. L<sub>p</sub>=w(V<sub>Ɵ</sub> – V sinƟ)/ v cos Ɵ
Answer» E.


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