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7th edition 1B.5

Posted: Sat Oct 13, 2018 11:12 pm
by Alyssa Bryan 3F
In this question, the energy is given in keV and we are given a conversion from eV to joules. What is keV and what is the difference between this unit of measurement and joules?

Re: 7th edition 1B.5

Posted: Sun Oct 14, 2018 12:05 am
by Lily Smith 4C
KeV is Kiloelectron Volts so 10 to the third of standardized. Change this to regular electron Volts (eV) and you should be able to do your conversion.

Re: 7th edition 1B.5

Posted: Tue Oct 16, 2018 12:29 pm
by Grace Kim 1J
Kiloelectron volt (keV) is one thousand electron volts. To convert keV to joules, you just need to remember the formula that 1 J= 1.6022x 10^-19 keV. Joules and eV is connected in the sense that the potential difference of 1 volt causes an electron to gain an amount of energy.

Re: 7th edition 1B.5

Posted: Tue Oct 16, 2018 1:11 pm
by Kelsey Warren 1I
I agree with everything stated above I just wanted to clarify that 1 eV=1.6x10^-19 J, not the other way around. Hope this helps!