For an object to appear blue, what must the object do to blue light waves?
a) it must diffract them
B) it must refract them
C) it must shift them
D) it must reflect them

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel

What causes the development of most clouds and precipitation in the atmosphere?

Asimple electrochemical cell contains two electrodes.