the wavelength associated with a gold ball weighing 200gm and moving at the speed of 5m/h is?
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Hello ,
you can go by the formula
wavelength=h/mv
w=6.63×10^-34/(200×10^-3×5÷3600)
w=6.63×36×10^-29
w=2.38×10^-30 m
so the answer is option c as only order is asked.
you can go by the formula
wavelength=h/mv
w=6.63×10^-34/(200×10^-3×5÷3600)
w=6.63×36×10^-29
w=2.38×10^-30 m
so the answer is option c as only order is asked.
Anonymous:
1.825×10^6 electrons.
3-1x10^8/9.108x6.002
can u explain
one mole of e- are 6.022 ×10^23
then mass of one e- is 9.1×10^-31
therefore mass of 1 mole is Na×mass of 1 e-
therefore for 1 kg ,moles of e- are 1/Na×mass of e-
yes i got it....thank u
so the option according to you is 3rd
welcome.
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