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Author Question: Find the number of nuclei per unit volume (n = nuclei/cm3) for lead. atomic weight = 202.7 density = ... (Read 1557 times)

NguyenJ

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on: Aug 10, 2020

Question 1

Calculate the half-value thickness (in mm) of lead if it reduces the intensity of a beam of x-rays whose wavelength is 10 pm by a factor of two. (Assume the linear absorption coefficient of lead is 43 cm−1 for x-rays of wavelength 10 × 10−12 m.)

◦
0.24

◦
0.20

◦
0.12

◦
0.16

◦
0.18


Question 2

Find the number of nuclei per unit volume (n = nuclei/cm3) for lead.


atomic weight = 202.7

density = 11.5 g/cm3

Avogadro's number = 6.02 × 1023

◦
2.51 × 1022

◦
3.42 × 1022

◦
2.93 × 1022

◦
2.94 × 1023

◦
2.05 × 1021
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by NguyenJ on Aug 10, 2020

jessicaduplan

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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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NguyenJ

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Reply 2 on: Aug 10, 2020
Gracias!

steff9894

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

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