electromagnetism Flashcards
1
Q
charge of an electron
A
-1.6 x 10^-19 C
2
Q
charge of a proton
A
1.6 x 10^-19 C
3
Q
charge of a neutron
A
0 C
4
Q
mass of an electron
A
9 x 10^-31 kg
5
Q
mass of a proton
A
5000 x 9 x 10^-31 kg
6
Q
mass of a neutron
A
equal to the mass of a proton
7
Q
coulomb’s law
A
F= k q1q2/r^2
8
Q
what is the value of k
A
9 x 10^9 Nm^2/C^2
9
Q
what happens if q1q2< 0
A
then the force points toward each other
10
Q
what happens if q1q2> 0
A
then the force points away
11
Q
how can you calculate the velocity of an electron traveling around a nucleus?
A
k q1q2/r^2 = mv^2/r
12
Q
what is the radius of a hydrogen atom
A
5 x 10^-11 m
