물질파. 2.2×10^6 m/s 6.67×10^7 Hz particle mass

물질파. 2.2×10^6 m/s 6.67×10^7 Hz particle mass

 

 

입자가 2.2×10^6 m/s로 움직이고

주파수가 6.67×10^7 Hz인 경우

입자의 질량은?

 

 

Calculate the mass of a particle

if it is traveling at 2.2×10^6 m/s

and has a frequency of 6.67×10^7 Hz.

 

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λ = h / p = h / mv

( h: Planck constant = 6.626×10^(-34) J•s )

( h: Planck constant = 6.626×10^(-34) kg•m^2/s )

( 참고 https://ywpop.tistory.com/3539 )

 

 

 

λ = c/ν 이므로,

c/ν = h / mc

 

m = h / [c^2 / ν]

= (6.626×10^(-34) kg•m^2/s) / [(2.2×10^6 m/s)^2 / (6.67×10^7 /s)]

= (6.626×10^(-34)) / [(2.2×10^6)^2 / (6.67×10^7)]

= 9.131285×10^(-39) kg

 

 

 

답: 9.1×10^(-39) kg