A scanning electron microscope (SEM) accelerates electrons to very high speeds and fires those electrons at a sample. By looking at the way that the electrons interact with the sample, we can generate detailed images of objects we can't get with a traditional optical microscope, like mineral crystals or biological cells. To accomplish this goal, an SEM uses an accelerating voltage around 10kV (high voltage generally means better resolution). One such SEM uses an accelerating voltage of 13kV. How fast are the electrons moving after they pass through this accelerating voltage?

v = 1.697 x 10^8 ms^-1

Explanation:

As we know ½ mv2 = eV where m is the mass of electron = 9 x 10^-31 kg and v is the velocity or speed of electrons….

We have V = 13kV = 1.3 x 10^-14 eV

By putting the values…

v2 = 2 eV / m = 2 x 1.3 x 10^-14 / 9 x 10^-31 = 2.88 x 10^ 16 ms^-1

v = 1.697 x 10^8 ms^-1

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.