7th edition 1B.5
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7th edition 1B.5
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?
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Re: 7th edition 1B.5
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.
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Re: 7th edition 1B.5
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.
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Re: 7th edition 1B.5
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!
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Re: 7th edition 1B.5
1eV (electronvolt) = 1.6022x10^-19J (joules), so 1keV (kilo-electronvolt) = 1.6022x10^-16J. The energy in the formula E=hv is in joules, so you need to convert first!
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Re: 7th edition 1B.5
Does anyone know if this unit conversion is given on the formula sheet or must be memorized?
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