1
KER,
Questions (5 pts]:
22.5 [pts] New

Question

1
KER,
Questions (5 pts]:
22.5 [pts] Newton's kinematics break down when traveling near the speed of light. Compare
the speed of an electron in the cathode-ray tube calculated from Eq. (5.9) in the manual
to the speed of light c = 3 . 10 m/s. Can we just keep using Newtonian mechanics?
Hint: If the electrons are traveling at 50% of the speed of light (i.e. 0.5*c) or more than
Newton's Laws are no longer completely accurate; this is because of relativistic effects.
2

Kunduz · Accepted Answer

In
this problem of your lah manal you must be
.
given. voltage difference and charge
and charge of electron
now
17
Im
2
ne²=
m ² = qu
m
ga
lagu
q=
1.6.xlonis Colomb.
me 9/x 10-3 kg
.
V = given in book
just put values to get velocity v.
newtons laws are not
if
applicable inside cathode
tube.
Please rate
70.5
3x108

1 KER, Questions (5 pts]: 22.5 [pts] Newton's kinematics break down when traveling near the speed of light. Compare the speed of