Ask your homework questions to teachers and professors, meet other students, and be entered to win $600 or an Xbox Series X 🎉Join our Discord!



Numerade Educator



Problem 13 Easy Difficulty

A super train of proper length $1.00 \times 10^{2} \mathrm{m}$ travels at a speed of 0.95$c$ as it passes through a tunnel having proper length 50.0 m. As seen by a track side observer, is the train ever completely within the tunnel? If so, by how much?




You must be signed in to discuss.

Video Transcript

using L physical to proper lend times squared Rudolph one minus well, we squared, divided by cease were well in this case, proper land is equal to 100 meters, 100 meters and therefore angle is equal to we're also even be. We is equal to zero point buying five times the speed of light. So Al is equal to 100. Multiply by squared Rudolph one minus hoese Tzeitel point 95 times c all square divided by C square and L is equal to 100. Um, multiply by one minus 0.95 whole square, zero point mine by all square and this gives us 90 meters.

Top Physics 101 Mechanics Educators
Elyse G.

Cornell University

Liev B.

Numerade Educator

Marshall S.

University of Washington

Aspen F.

University of Sheffield