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Author Question: Because the factor h on the right side of the Heisenberg uncertainty principle has units of ... (Read 70 times)

joesmith1212

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on: Aug 10, 2020

Question 1

Because of Heisenberg's Uncertainty Principle, the velocity of a particle is known least precisely when the length of the wave packet representing the particle is

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< 10−15 m.

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< 10−10 m.

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of the order of 1.00 m.

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>10 m.

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the length of a plane wave (infinite)


Question 2

Because the factor h on the right side of the Heisenberg uncertainty principle has units of Joule-seconds, it suggests that the energy of a system also has uncertainty. The uncertainty in energy depends on the length of the time interval during which a system exists. ΔEΔt≥h/4π. Suppose an unstable mass is produced during a high-energy collision such that the uncertainty in its mass is me/100. (me = 9.11 × 10−31 kg.) How long will this particle exist?

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6.4 × 10−20 s

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2.3 × 10−23 s

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1.0 × 1015 s

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1.2 × 1013 s

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8.1 × 10−19 s
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by joesmith1212 on Aug 10, 2020

aliotak

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Reply #1 on: Aug 10, 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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joesmith1212

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Reply 2 on: Aug 10, 2020
Gracias!

mohan

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Reply 3 on: Yesterday
:D TYSM

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