4.3.4. set up the boundary value problem corresponding to the thermal equilibrium of an insulated semi-circular plate with unit diameter, whos curved edge is kept at 0 degrees and whose straight edge is at 50 degrees

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?

Acorporation gives out its profits as dividends paid to whom?