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Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

This problem has been solved! see the answer capacitor 2 has half the capacitance and twice the potential difference as capacitor 1. what is the ratio (u_{\rm c})_1/\,(u_{\rm c})_2

Aparallel-plate capacitor has a plate area of 0.3 m2 and a plate separation of 0.1 mm. if the charge on each plate has a magnitude of 5 × 10–6 c then the force exerted by one plate on the other has a magnitude of about: