The inventor of the photographic process in which a photograph produced without a negative by exposing objects to light on light sensitive paper, is named
a.
man ray
c.
dorothea lange
b.
richard avedon
d.
pablo picasso

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.