« 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 88 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?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Schmidt-Nielsen and coworkers demonstrated the route that air travels in the avian (ostrich) lung. Schmidt-Nielsen and coworkers demonstrated the route that air travels in the avian (ostrich) lung.
Movement of a bolus of food from the mouth to the esophagus. The bolus then travels to the stomach. Movement of a bolus of food from the mouth to the esophagus. The bolus then travels to the stomach.
Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ... Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ...
Use a graphical method to find the length of the loan to the nearest year Use a graphical method to find the length of the loan to the nearest year
A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ... A pool player is attempting a fancy shot. He hits the cue ball giving it a speed of 5.57 m/s ...
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction ... A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction ...
Video: Methods that regulate pH

For a complete list of videos, visit our video library