21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 18, Problem 35QP
To determine
Show that the Lorentz factor depends on speed and calculate the speed in terms of c. Is the Lorentz factors of the speed approaches the
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A light-year is the distance that light can travel in one year. Similarly, we can define a light-second, light-day, etc. as the distance that light can travel in other time intervals. Calculate the distance represented by each of the following: (Assume that the speed of light is 3 × 108 m/s).
1. 4 light-seconds
2. 3 light-minutes
3. 2 light-days
4. 2 light-days, but this time answer in miles (enter just the number with no units)
The special theory of relativity has what effect on measurements done today? (a) None whatsoever, because any correction would be negligible. (b) We need to consider the effects of relativity when objects move close to the speed of light. (c) We should always make a correction for relativity because Newton’s laws are basically wrong. (d) It doesn’t matter, because we can’t make measurements where relativity would matter.
It is year 2120 and we have figure out a propulsion system that allows
spaceships travel at velocities as high as v = 0.87c. A first expedition to
Alpha Centauri (the nearest planetary system) is being planned. Alpha
Centauri is 4.3 ly away.
Answer the following 5 questions below asking you about the details of
this expedition.
Question 10
Assuming a constant velocity of v=0.87c, how long would the trip to
Alpha Centauri take as observed by the ground control team here on
Earth?
Give your answer in years
Chapter 18 Solutions
21st Century Astronomy
Ch. 18.1 - Prob. 18.1CYUCh. 18.2 - Prob. 18.2CYUCh. 18.3 - Prob. 18.3CYUCh. 18.4 - Prob. 18.4CYUCh. 18 - Prob. 1QPCh. 18 - Prob. 2QPCh. 18 - Prob. 3QPCh. 18 - Prob. 4QPCh. 18 - Prob. 5QPCh. 18 - Prob. 6QP
Ch. 18 - Prob. 7QPCh. 18 - Prob. 8QPCh. 18 - Prob. 9QPCh. 18 - Prob. 10QPCh. 18 - Prob. 11QPCh. 18 - Prob. 12QPCh. 18 - Prob. 13QPCh. 18 - Prob. 14QPCh. 18 - Prob. 15QPCh. 18 - Prob. 16QPCh. 18 - Prob. 17QPCh. 18 - Prob. 18QPCh. 18 - Prob. 19QPCh. 18 - Prob. 20QPCh. 18 - Prob. 21QPCh. 18 - Prob. 22QPCh. 18 - Prob. 23QPCh. 18 - Prob. 24QPCh. 18 - Prob. 25QPCh. 18 - Prob. 26QPCh. 18 - Prob. 27QPCh. 18 - Prob. 28QPCh. 18 - Prob. 29QPCh. 18 - Prob. 30QPCh. 18 - Prob. 31QPCh. 18 - Prob. 32QPCh. 18 - Prob. 33QPCh. 18 - Prob. 34QPCh. 18 - Prob. 35QPCh. 18 - Prob. 36QPCh. 18 - Prob. 37QPCh. 18 - Prob. 38QPCh. 18 - Prob. 39QPCh. 18 - Prob. 40QPCh. 18 - Prob. 41QPCh. 18 - Prob. 42QPCh. 18 - Prob. 43QPCh. 18 - Prob. 44QPCh. 18 - Prob. 45QP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is one of the postulates of Special Relativity? Time dilates and length contracts as an object approaches relativistic speeds. . Events that are simultaneous in one frame may not be simultaneous in another. . All laws of physics are of the same form in all inertial frames of reference. The speed of light in vacuum is constant and dependent on the speed of the source.arrow_forwardSolve this relativity problem using Lorentz transformations. Step by Step. An observer on earth watches a 25 meter long spacecraft pass by at relativistic speed for two hours. An astronaut traveling inside the ship measures his characteristic time as half an hour.Before starting the space flight he was informed that his ship was 100 meters long.what was the speed at which the ship was moving?arrow_forwardThe great proof of Einstein's Theory of General Relativity was that light is bent by gravity (as it travels through a curved spacetime). Which of these statements is true?? O A light ray is bent the same amount, it doesn't matter how strong the gravity is. O A light ray is bent less by an intense gravitational field. O A light ray is bent more by an intense gravitational field. O Light rays aren't bent.arrow_forward
- Provide the correct answer in second. Previously got so many wrong answers. A muon has an average life time t_0 = 2.2μs from Earth's frame of referance. Needed distance for them to be found on earth surface is 6Km . What is the average life time of muon from it's own frame of referance if they are travelling with an speed of 2.978×108 m/s ?arrow_forwardYou take a round trip to the star Sirius, a distance of 8.6 light years away, on board a spacecraft traveling at 99% the speed of light. When you return to Earth, 17.2 years have elapsed on Earth. But due to Einstein's theory of relativity, you will have aged by 172 years 24 years 2.4 years 17.2 years The fastest space probe currently flying (perhaps one of the Voyagers) might be able to reach a nearby star system in about 50,000 years 5,000 years 50 years 500 years Elon Musk of Space-X plans to send a human crew to the nearby Proxima Centauri star system by 2050. True Falsearrow_forwardThe star Alpha Centauri is 4.367 light vears from earth. What velocity do you need to travel at to reach this star in 1,447 years. Give your answer as a fraction of the speed of light (e.g. 0.406 for 0.406c) Round your answer to 3 decimal places. Add your answer Question 8 An electron is accelerated accross a voltage of 344kV. What is the momentuum of the electron? Use a value for the electron masss of 511 kevic. Give your answer in units of keWc (eg if the answer is 350 kevic write 350I Round your answer to 0 decimal places. Add your answerarrow_forward
- please help: A lighthouse sweeps its beam of light around in a circle once every 7.6 s. To an observer in a spaceship moving away from Earth, the beam of light completes one full circle every 16 s. What is the speed of the spaceship relative to Earth? Express your answer using two significant figures.arrow_forward1. Your friend recorded the location of a certain explosion at (11 [m] , 13 [m]). If he is aboard a bus moving at a velocity 0.6 with respect to your reference frame, what is the coordinates of the event in your reference frame? A. (8 (m] , 4 [m]) B. (4 [m] ,8 (m]) C. (24.5 [m] , 23.5 [m]) D. (23.5 (m] , 24.5 [m]) 2. Kim celebrated his birthday at (12 [m] , 13 [m]). If he took the exam at (6 [m], 10 [m]), what is the (time interval, space interval) of the two events for a person in a rocket moving at 0.50 to the left? A. (3/3 (m],0 [m]) B. (0,3/3 (m)) C. (5V3 [m], 4v3 [m]) D. (4/3 [m], 5v3 [m]) 3. A charged particle is observed in two inertial reference frames. Which of the following statements is/are TRUE about the particle? I. The charge is covariant. II. The mass is invariant. III. The momentum is invariant. А. П only B. I and II only C. II and III only D. I, II and IIIarrow_forwardIn 2030, the Australian Space Agency launches a spaceship to our nearest neighbour Alpha Centauri (4 lightyears away). How long will the journey take according to a clock on the spaceship if it travels at v=0.999c-299482km/s (where 'c' is the speed of light equal to 299782km/s). About 6 years. Just over 2 months. About 2 years. About 4 years.arrow_forward
- The principles on which special relativity are based include all the following EXCEPT Observers in two inertial frames agree on the speed of the other observer. An observer in an inertial reference frame cannot tell if they are in motion or not. The speed of light is the same in any frame of reference. Only the universal rest frame gives correct measurements. The laws describing observed motion are the same in any inertial reference frame.arrow_forwardDoes special relativity allow anything to travel faster than light? Explain.arrow_forwardA star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last the 70 years of an astronaut's life? The answer is 0,7526c. Show a complete approach on how to get to the answer by using the necessary equations.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON