This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Our best measurements from Earth indicate that the star system Alpha Centauri is 4.2 light-years ... (Read 81 times)

karateprodigy

  • Hero Member
  • *****
  • Posts: 550
on: Jul 28, 2018
Our best measurements from Earth indicate that the star system Alpha Centauri is 4.2 light-years away. Suppose some of our astronauts traveled there at a speed v = 0.90c. What would the astronauts measure as the distance to Alpha Centauri?
 a. 1.3 lightyears
  c. 1.8 lightyears
  b. 4.0 lightyears
  d. 2.7 lightyears

Question 2

A muon formed high in Earth's atmosphere travels at a speed 0.9900c for a distance (as we see it) of 9200 m before it decays. How far does the muon travel as measured in its frame?
 a. 2596 m
  c. 4554 m
  b. 1298 m
  d. 649 m


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

steff9894

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


karateprodigy

  • Member
  • Posts: 550
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int
The Major Divisions of the Peripheral Nervous System The Major Divisions of the Peripheral Nervous System
Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f Model of a sequential study in which two cohorts were followed beginning at age 20. One cohort was f
Overview of the Solar System Overview of the Solar System
Muscular system and Cardiovascular system Muscular system and Cardiovascular system
Early Earth Early Earth
Video: Hershey Chase Experiments

For a complete list of videos, visit our video library