Approximating the eye as a single thin lens 2.65 cm from the retina, find the eye's near-point distance if the smallest focal length the eye can produce is 2.20 cm

The answer is b.the gaseous state is electrically positive, while the plasma state is electrically negative. 

Transfer of electrons. hope it !

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.