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Author Question: Two vectors, of magnitudes 20 mm and 50 mm, are added together. Which one of the following is a ... (Read 91 times)

schs14

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on: Jul 29, 2018
Two vectors, of magnitudes 20 mm and 50 mm, are added together. Which one of the following is a possible value for the magnitude of the resultant?
 
  A) 10 mm
  B) 20 mm
  C) 40 mm
  D) 80 mm

Question 2

A pion is an unstable particle that has a mean lifetime of 2.55  10-8 s. This is the time interval between its creation in a nuclear process and its extinction into decay products,
 
  as measured in a frame of reference at rest with respect to the pion. An average pion is traveling at 0.230c relative to Earth. How far does it travel in its lifetime, relative to Earth?
  A) 2.07 m
  B) 1.81 m
  C) 2.23 m
  D) 3.22 m
  E) 3.50 m
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welcom1000

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Reply #1 on: Jul 29, 2018
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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schs14

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
Gracias!

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