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Author Question: A neutron has a mass of 1.67 1027 kg. Its de Broglie wavelength is 1.4 1010 m. What is its kinetic ... (Read 143 times)

laurencescou

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on: Aug 10, 2020

Question 1

A helium-neon laser emits red light having a wavelength of 6.4 × 10−7 m and a power of 0.5 mW. How many photons are emitted each second?

◦
6.4 × 1038

◦
1.6 × 1021

◦
3.2 × 1025

◦
2.6 × 1018

◦
1.6 × 1015


Question 2

A neutron has a mass of 1.67 × 10−27 kg. Its de Broglie wavelength is 1.4 × 10−10 m. What is its kinetic energy (in eV)?

◦
4

◦
0.4

◦
0.04

◦
40

◦
0.08
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by laurencescou on Aug 10, 2020

gstein359

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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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laurencescou

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Reply 2 on: Aug 10, 2020
YES! Correct, THANKS for helping me on my review

ghepp

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Reply 3 on: Yesterday
Wow, this really help

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