A particle is created in the upper atmosphere; 18km above the surface of the Earth as measured by someone on the ground. The particle travels towards Earth's surface at a speed of 0.95c as measured by someone on the ground. The particle travels for a time period 2.0 × 10−5s as measured in the particle's rest frame. 38. How long does the particle travel as measured by someone on the surface of the Earth?

College Physics
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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The correct answer is D but im not sure why as I got a different answer. Could someone please explain

A particle is created in the upper atmosphere; 18km above the surface
of the Earth as measured by someone on the ground. The particle travels
towards Earth's surface at a speed of 0.95c as measured by someone on the
ground. The particle travels for a time period 2.0 × 10-5s as measured in
the particle's rest frame.
38. How long does the particle travel as measured by someone on the
surface of the Earth?
(a) 3.5 × 10-6,
(b) 6.2 x 10-6S
(c) 2.0 × 10-5s
(d) 6.4 x 10-5s
(e) 8.9 × 10-5s
Transcribed Image Text:A particle is created in the upper atmosphere; 18km above the surface of the Earth as measured by someone on the ground. The particle travels towards Earth's surface at a speed of 0.95c as measured by someone on the ground. The particle travels for a time period 2.0 × 10-5s as measured in the particle's rest frame. 38. How long does the particle travel as measured by someone on the surface of the Earth? (a) 3.5 × 10-6, (b) 6.2 x 10-6S (c) 2.0 × 10-5s (d) 6.4 x 10-5s (e) 8.9 × 10-5s
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