Use simple mass balances for 235u and total u (assume u is entirely made up of 235u and 238u) to derive relations for p/f and w/f in terms of dxf, xw, and xp

we need to know the time interval during which the force acts. impulse of force = momentum change

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.

the doppler effect is used by weather forecasters to measure 

moving clouds