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Author Question: An old copper penny has a mass 3 1022 times that of a copper atom. Compare the de Broglie ... (Read 91 times)

Tirant22

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on: Feb 15, 2020

Question 1

What is the de Broglie wavelength of an electron (m = 9.11 × 10-31 kg) moving at a velocity of (10% of the speed of light)?
◦ less than 3.9 × 10-12 m
◦ 2.4 × 10-11 m
◦ greater than 1.1 × 10-4 m
◦ 3.3 × 10-8 m

Question 2

An old copper penny has a mass 3 × 1022 times that of a copper atom. Compare the de Broglie wavelength of a penny moving at 0.5 m/s to that of a copper atom moving 104 times as fast. The wavelength for the
◦ copper atom is 3 × 1026 times that of the penny.
◦ copper atom is 3 × 1018 times that of the penny.
◦ penny is 3 × 1018 times that of the copper atom.
◦ penny is 3 × 1026 times that of the copper atom.
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by Tirant22 on Feb 15, 2020

dreamfighter72

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Tirant22

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Reply 2 on: Feb 15, 2020
Excellent

helenmarkerine

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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