Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 13, Problem 35QAP
To determine
The effects of special and general relativity in everyday lives on Earth.
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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.
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.
The 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.
Chapter 13 Solutions
Understanding Our Universe
Ch. 13.1 - Prob. 13.1CYUCh. 13.2 - Prob. 13.2CYUCh. 13.3 - Prob. 13.3CYUCh. 13.4 - Prob. 13.4CYUCh. 13.5 - Prob. 13.5CYUCh. 13.6 - Prob. 13.6CYUCh. 13 - Prob. 1QAPCh. 13 - Prob. 2QAPCh. 13 - Prob. 3QAPCh. 13 - Prob. 4QAP
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- If general relativity offers the best description of what happens in the presence of gravity, why do physicists still make use of Newton’s equations in describing gravitational forces on Earth (when building a bridge, for example)?arrow_forwardIf you use an Earth based telescope to project a laser beam onto the moon, you can move the spot across the moon's surface at a velocity greater than the speed of light Does this violate modern relativity? (Note that light is being sent from the Earth to the moon, not across the surface of the moon.)arrow_forwardWhich of Einstein’s postulates of special relativity includes a concept that does not ?t with the ideas of classical physics? Explain.arrow_forward
- General relativity considers gravity as the a) warping of mass b) bending of light c) warping of space-time d) pull of Earth on a mass Which planet in our solar system was demoted to being a dwarf planet? a) Mars b) Mercury c) Pluto d) Venus Which planet in our solar system was first observed to have relativistic perihelion shift? a) Mars b) Mercury c) Pluto d) Venus e)arrow_forwardDoes special relativity allow anything to travel faster than light? Explain.arrow_forwardWhat are the two postulates of the special theory of relativity?arrow_forward
- Suppose astronomers found evidence of an earth-like planet 20 lightyears away. a) what may be two ethical considerations that one may consider when deciding if humans should travel to this planet? b) how fast would a spaceship need to travel if the roundtrip can no take longer than 40 years for the astronauts? c) how much time will the trip take according to the people on earth?arrow_forward6. One of the potentially confusing things about special relativity is that it shows us that the time measured between two events depends upon your inertial frame of reference. In particular, two events that appear to be simultaneous in one inertial frame may be measured to occur at different times in a different inertial frame. Even more interesting is that Event 1 might occur either before or after (or at the same time as) Event 2, depending upon your reference frame! The proper interpretation of these facts is to say that nothing in physics forces two simultaneous events in one frame to be simultaneous in any other frame. However, what about the order of events when Event 1 CAUSES Event 2? For example, let's consider two events from a game of pool: 1) A cue ball, traveling at 10 m/s, hits the eight ball (of mass equal to the cue ball). An elastic collision transfers all the linear momentum of the cue ball to the eight ball. 2) 0.1 seconds later, the eight ball sinks in a corner…arrow_forwardExplain in not less than 2 paragraphs the Einstein’s special theory of relativity.arrow_forward
- You 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_forwardWhat is gravity in the Theory of General Relativity? Group of answer choices The force that can act at a distance between one massive object and another. The interaction of gravity waves between massive objects. The curvature of spacetime created by the effects of mass. The combination of length contraction and time dilation.arrow_forwardGeneral relativity predicts that (a) light leaving the Sun is slowed by gravity. (b) light passing the Sun is deflected. (c) a clock on the Sun’s surface runs faster than on Earth. (d) All of these.arrow_forward
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