21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 18, Problem 38QP
To determine
The age of the younger twin of the child by made the journey.
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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
A woman living in galaxy X is about to deliver her first baby. The nearest hospital is in galaxy Y, which is 1.0 x 1012 m away. The woman flew to the hospital in her spaceship at 0.8c. She gave birth one hour after she started flying as timed by her. From the point of view of the nurses at the hospital:
i) What was the elapsed time when the woman watch indicated one hour?ii) How far did she travel in that one hour?iii) Was the baby born in the hospital? Justify your answer
The star Epsilon Eridani is 10.4 light-years from Earth. Imagine a spaceship that travels from Earth to Epsilon Eridani at a constant speed of 0.921c. On Earth, we would measure the time it takes for the ship to reach the star to be (10.4ly/0.921c)= 11.2 years.
(a) How much time (in years) would it take the ship to travel from the Earth to the star as measured by a passenger aboard the ship?
years
(b) What is the distance to the star (in light years) as measured by a passenger aboard the ship?
Chapter 18 Solutions
21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
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
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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
- A woman living in galaxy X is about to deliver her first baby. The nearest hospital is in galaxy Y, which is 1.0 x 1012 m away. The woman flew to the hospital in her spaceship at 0.8c. She gave birth one hour after she started flying as timed by her. From the point of view of the nurses at the hospital: i) What was the elapsed time when the woman watch indicated one hour? ii) Howfar did she travel in that one hour? iii) Was the baby born in the hospital? Justify your answerarrow_forwardIt is year 2120 and we have figure out a propulsion system that allows 0.87c. A first expedition to spaceships travel at velocities as high as v %3D 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.arrow_forwardActivity 2.2. Shrinking Ship Danny is driving a spaceship with a length of 60 meters at the speed of .32c and is observed by Susan in the direction relative to her. Based on this situation, identify the perceived length of the space shuttle using the principle of length contraction. In addition, describe what happened to the length of the space shuttle. Moreover, describe what will happen to an object as it reaches the speed of light.arrow_forward
- What do you understand by time dilation? What is proper time and establish a relation for proper time. A beam of particle of half-life 2×10-8 sec travels in laboratory with speed 0.96 times the speed of light. How much distance does the beam travel before the flux falls to ½ time the initial flux.arrow_forwardIf astronauts could travel at v = 0.902c, we on Earth would say it takes (4.20/0.902) = 4.66 years to reach Alpha Centauri, 4.20 light-years away. The astronauts disagree. (a) How much time passes on the astronauts' clocks? In years (b) What is the distance to Alpha Centauri as measured by the astronauts? In light yearsarrow_forwardIf astronauts could travel at v = 0.932c, we on Earth would say it takes (4.20/0.932) = 4.51 years to reach Alpha Centauri, 4.20 light-years away. The astronauts disagree. (a) How much time passes on the astronauts' clocks? years (b) What is the distance to Alpha Centauri as measured by the astronauts? light-yearsarrow_forward
- The star Proxima Centauri is 4.24 light-years from Earth. Imagine a spaceship that travels from Earth to Proxima Centauri at a constant speed of 0.925c. On Earth, we would measure the time it takes for the ship to reach the star to be (4.24ly/0/925c)=4.58 years How much time (in years) would it take the ship to travel from the Earth to the star as measured by an astronaut aboard the ship? ______ years What is the distance to the star (in light years) as measured by an astronaut aboard the ship? _______ lyarrow_forwardHow old will each twin be when twin B gets back home? (Hint: think of space-time diagrams and the twin paradox)arrow_forwardTopic: Theory of relativity Instructions: Answer the problem. Show complete solutions. View Image.arrow_forward
- If astronauts could travel at v = 0.938c, we on Earth would say it takes (4.20/0.938) = 4.48 years to reach Alpha Centauri, 4.20 light-years away. The astronauts disagree. (a) How much time passes on the astronauts' clocks? years(b) What is the distance to Alpha Centauri as measured by the astronauts? light-yearsarrow_forwardIf astronauts could travel at v = 0.950c, we on Earth would say it takes (4.20/0.950) = 4.42 years to reach Alpha Centauri, 4.20 light - years away. The astronauts disagree. (a) How much time passes on the astronauts’ clocks? (b) What is the distance to Alpha Centauri as measured by the astronauts?arrow_forwardD3arrow_forward
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Time Dilation - Einstein's Theory Of Relativity Explained!; Author: Science ABC;https://www.youtube.com/watch?v=yuD34tEpRFw;License: Standard YouTube License, CC-BY