(a) The wavelength of a Balmer series line (from n = 3) for by found to be 656.5 nm. What percentage difference is found between the
and the wavelength predicted by ; = R
( 7 )
[R = 1.097 x 107m]
[GMarks)
(b) If a hydrogen atom has its electron in the n = 4 state, how much energy
in eV is needed to ionize it?
= 3 x 108m/s, h = 6.6 x 10-341/s, 1ev = 1.602 x 10-9/] [6 Marks]

Depotion can i think

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. 

Because they're in different places for this the temperature varies.