October 2018 1 249 Report
Tolong dibantu ya.. :)
Berkas elektron berkecepatan 1,1 x 106 m/s. Jika massa elektron dan konstanta Planck masing-masing 9 x 10-31 kg dan 6,6 x 10-34 J.s, maka panjang gelombang berkas elektron tersebut adalah...
kunci: 6,6 x 10⁻¹° m

Terima kasih..

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