If I was walking would in a circle, my distance and displacement would be the same only if ...   a I walked the full circle.
 b I walked half the circle.  
c I stayed in the same place.  
d I walked the circle twice.

The speed of light can be used to measure the

How many atoms of nitrogen are in the chemical formula ni(w on

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