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Author Question: As a spaceship heads directly to Earth at a velocity of 0.8c, it sends a radio signal to Earth. When ... (Read 92 times)

londonang

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on: Aug 10, 2020

Question 1

An electron has a kinetic energy that is twice its rest energy. Determine its speed.

◦
0.76 c

◦
0.81 c

◦
0.94 c

◦
0.54 c

◦
0.87 c


Question 2

As a spaceship heads directly to Earth at a velocity of 0.8c, it sends a radio signal to Earth. When those radio waves arrive on Earth, their velocity relative to Earth is

◦
0.8 c.

◦
c.

◦
1.8 c.

◦
, where vE is the velocity of the Earth.

◦
, where vE is the velocity of the Earth.
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by londonang on Aug 10, 2020

janieazgirl

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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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londonang

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Reply 2 on: Aug 10, 2020
Thanks for the timely response, appreciate it

xiaomengxian

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Reply 3 on: Yesterday
Gracias!

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