Download presentation

Published byJesse Lindsay Modified over 3 years ago

1
**1. less than 3 years 2. 3 years. 3. more than 3 years.**

An astronaut ages 3 years when traveling at 99% of the speed of light to the star Procyon and back. The space officials who greet her on her return have aged 1. less than 3 years 2. 3 years. 3. more than 3 years. Ch 35-1

2
**1. less than 3 years 2. 3 years. 3. more than 3 years.**

An astronaut ages 3 years when traveling at 99% of the speed of light to the star Procyon and back. The space officials who greet her on her return have aged 1. less than 3 years 2. 3 years. 3. more than 3 years. Ch 35-1 Answer: 3 The 3 years experienced by the traveling astronaut is considerably less than if she had stayed at home. The stay-at-homes age more than 3 years—21.2 years, to be exact.

3
A 1-meter long spear is thrown at a relativistic speed through a pipe that is 1 meter long. Both these dimensions are measured when each is at rest. When the spear passes through the pipe, which of these statements best describes what is observed? 1. The spear shrinks so that the pipe completely covers it at some point. 2. The pipe shrinks so that the spear extends from both ends at some point. 3. Both shrink equally so that the pipe completely covers it at some point. 4. Any of the above, depending on the motion of the observer. Ch 35-2

4
A 1-meter long spear is thrown at a relativistic speed through a pipe that is 1 meter long. Both these dimensions are measured when each is at rest. When the spear passes through the pipe, which of these statements best describes what is observed? 1. The spear shrinks so that the pipe completely covers it at some point. 2. The pipe shrinks so that the spear extends from both ends at some point. 3. Both shrink equally so that the pipe completely covers it at some point. 4. Any of the above, depending on the motion of the observer. Ch 35-2 Answer: 4 Observe from a rest position with respect to the pipe and at some point the contracted spear will be completely covered by the pipe. Or travel along with the spear and you’ll see that both ends of the spear at some point extend from the contracted pipe. Or move between the spear and the pipe at a certain intermediate velocity, and you’ll see both the spear and the pipe contracted the same amount. So what really happens is relative—it depends on your point of view, or frame of reference!

Similar presentations

OK

The scale of the universe How do astronomers measure distances to the stars? How do astronomers describe the scale of the universe?

The scale of the universe How do astronomers measure distances to the stars? How do astronomers describe the scale of the universe?

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on steve jobs leadership Ppt on recent natural disasters in india Ppt on coalition government in israel Ppt on conservation of environment project Ppt on file system in unix run Ppt on council of ministers cambodia Ppt on waves tides and ocean currents and climate Ppt on review of literature format Ppt on 2 tier and 3 tier architecture Person focused pay ppt online