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If there were any issues or errors that you noticed while taking the exam or with the exam itself, please let me know below.

A pipe with water flowing through it has a rectangular cross-section of length, L, and width, W. It encounters another rectangular pipe with one-third of its original length but twice the width.  What is the ratio of velocity in the second pipe compared to the first pipe?

A block of mass 780 g is resting between two edges with empty space between them as shown above. A 24.0 g bullet is shot underneath the block at an unknown speed and goes through the block, leaving at 60.0 m/s.  The block then “jumps” to a height of 42.0 cm as a result.  What was the speed of the bullet (in m/s)?

An elevator ascends at a constant speed of 9.4 m/s when powered with 120 kW from a motor. What is the mass (in kg) of the elevator?

An object explodes from rest into 3 pieces. The first piece launches at 4 m/s, 60 north of east. The second piece, which is twice as massive as the other two, launches at 3 m/s directly west. What is the direction of motion (in degrees from east) of the third piece that is equal in size to the first piece?

Explain briefly concept of bioinspired capillary-driven pump for solar vapor generation.

What are the two main ways to achieve anti-adhesion on surfaces?  Briefly explain each.

What is soft lithography? Discuss briefly two soft lithography methods that can be used for fabricating bioinspired surfaces.

Briefly discuss what forces are involved and what is the minimum condition for droplet to move on magnetic arrays.

Why asymmetric surfaces are appropriate for droplet transport?