A tissue sample mounted on a glass slide is to be protected by a coverslip, which is essentially a slightly smaller glass plate that is placed over the sample. The sample is very thin and is covered with saline to keep it hydrated. This configuration can be modeled as two very long parallel plates of width w (into the page) and length 2L separated by a distance b (b<< L), with saline filling the space between the plates. The coverslip (the upper plate) is applied by moving it downward at a constant speed V, which causes saline to be squeezed out between the plates. Determine the saline mass maximum velocity (figure shows part b): If the exit velocity profile is uniform If the exit velocity profile is parabolic (Answer: Max velocity = 3Lv/2b) ✓ ✓ -2 L

A tissue sample mounted on a glass slide is to be protected by a coverslip, which is essentially a slightly smaller glass plate that is placed over the sample. The sample is very thin and is covered with saline to keep it hydrated. This configuration can be modeled as two very long parallel plates of width w (into the page) and length 2L separated by a distance b (b<< L), with saline filling the space between the plates. The coverslip (the upper plate) is applied by moving it downward at a constant speed V, which causes saline to be squeezed out between the plates. Determine the saline mass maximum velocity (figure shows part b): If the exit velocity profile is uniform If the exit velocity profile is parabolic (Answer: Max velocity = 3Lv/2b) ✓ ✓ -2 L

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