« previous next »

Author Question: A supertrain (rest-length = 100 m) travels at a speed of 0.950 c as it passes through a tunnel ... (Read 35 times)

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
on: Jul 28, 2018
A supertrain (rest-length = 100 m) travels at a speed of 0.950 c as it passes through a tunnel (rest-length 50.0 m). As seen by a trackside observer, is the train ever completely within the tunnel? If so, by how much?

Question 2

The period of a pendulum is 2.0 s in a stationary inertial frame of reference. What is its period when measured by an observer moving at a speed of 0.60 c with respect to the inertial frame of reference?


nicoleclaire22

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 28, 2018
Answer to Question 1

yes, by 18.8 meters

Answer to Question 2

2.5 s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Anatomy of the Carpal Tunnel Anatomy of the Carpal Tunnel
Speed of Earth Speed of Earth
J. M. W. Turner, Rain, Steam, and Speed—The Great Western Railway. J. M. W. Turner, Rain, Steam, and Speed—The Great Western Railway.
Cradle the head to finish. Rest the head on the table. Place your fingers on the sides of the head ... Cradle the head to finish. Rest the head on the table. Place your fingers on the sides of the head ...
The cradle. Rest your hands on the table, supporting the recipient’s head in your palms. Your ... The cradle. Rest your hands on the table, supporting the recipient’s head in your palms. Your ...
An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has ... An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has ...
Video: Transcription—A molecular view

For a complete list of videos, visit our video library