20, but number 10 is flawed, coriolis force doesn´t manifests in sinks (too short a time). Besides the myth says the water would rotate counter clock-wise in the north hemisphere. That question is wrong on all counts.
20, but number 10 is flawed, coriolis force doesn´t manifests in sinks (too short a time). Besides the myth says the water would rotate counter clock-wise in the north hemisphere. That question is wrong on all counts.