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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?

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 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?

Bellsouth Company provides the following ABC costing information:           Activities                                         Total Costs                Activity-cost drivers         Account inquiry                             $280,000                      14,000 hours         Account billing                               $350,000                     7,000,000 lines         Account verification accounts        $93,750                    50,000 accounts         Correspondence letters                   $29,000                         4,000 letters                Total costs                                $752,750                                                 The above activities are used by Departments A and B as follows:                                                                         Department A                        Department B         Account inquiry hours                          2,100 hours                           3,600 hours         Account billing lines                           500,000 lines                        350,000 lines         Account verification accounts            7,000 accounts                   5,000 accounts         Correspondence letters                       1,200  letters                         1,600 letters   How much of the total costs will be assigned to Department A?