Revision Flashcards
0
Q
Mass proton and neutron?
A
1.67x10^-27 kg
1
Q
Charge of proton and electron?
A
1.6x10^-19 C
2
Q
Mass electron?
A
9.11x10^-31
3
Q
1 ev = how many joules?
A
1.6x10 -19
4
Q
1 mega =?
A
10^6
5
Q
Specific charge?
A
Charge/mass unit:CkG^-1
6
Q
Equation energy photon?
A
E=HF
7
Q
h=?
A
6.63x10^-34 Js
8
Q
Work function?
A
=hf->thresholD frequency
9
Q
Speed of light?
A
3x10^8 ms^-1
10
Q
Power of laser beam?
A
=nHF
11
Q
Lamda =?
A
C/f
12
Q
E=?
A
Hc/wavelength
13
Q
Ekmax=?
A
Hf-workfunction
14
Q
Radio?
A
> .1 m
