Which example most effectively illustrates the dual nature of light?

a.
cameras that use photographic film
b.
solar panels
c.
radio antennas
d.
burglar alarms

What object a collides with object b and bounces back its final momentum is?

How would a small bar magnet be oriented when placed at position x?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.