Find the de broglie wavelength of a 100 mev electron using the relativistic energy formula.

The wavelength is

Explanation:

Given that,

Energy = 100 MeV

We need to calculate the De Broglie wavelength

Using formula of wavelength

Where, h = Planck constant

m = mass of electron

E = Energy

Put the value into the formula

Hence, The wavelength is

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.