A friend speeds by you in her spacecraft at a speed of 0.790 c. It is measured in your frame to be 4.60 m longand 1.60 m high.Part AWhat will be its length at rest?lo = 7.50 mSubmit✓ CorrectCorrect answer is shown. Your answer 7.49 m was either rounded differently or used a different number of significant figuPart BWhat will be its height at rest?ho= 2.61Submit Previous Answers Request AnswerPart CPrevious AnswersX Incorrect; Try Again; 4 attempts remainingSubmitPart DIVE ΑΣΦHow many seconds elapsed on your friend's watch when 23.0 s passed on yours?Ato 14.1 sSubmitPart E✓ CorrectImportant: If you use this answer in later parts, use the full unrounded value in your calculations.Ato =Previous AnswersHow fast did you appear to be traveling according to your friend?OF[Π ΑΣΦSubmit?Request AnswermHow many seconds elapsed on your watch when she saw 23.0 s pass on hers?■ | ΑΣΦRequest Answer?S

Answered: Image /qna-images/answer/939a2697-b40f-4e6b-89bf-a7fcde1be65e.jpg

A friend speeds by you in her spacecraft at a speed of 0.790 c. It is measured in your frame to be 4.60 m long and 1.60 m high. Part A What will be its length at rest? lo= 7.50 m Submit ✓ Correct Correct answer is shown. Your answer 7.49 m was either rounded differently or used a different number of significant Part B What will be its height at rest? ho= 2.61 Part C Previous Answers [15] ΑΣΦΑ Submit Previous Answers Request Answer Submit Part D X Incorrect; Try Again; 4 attempts remaining 6 Part E How many seconds elapsed on your friend's watch when 23.0 s passed on yours? Δto = 14.1 s Submit Ato= Previous Answers → ✓ Correct Important: If you use this answer in later parts, use the full unrounded value in your calculations. IVE ΑΣΦ 3 [w] How fast did you appear to be traveling according to your friend? Request Answer ? IVE ΑΣΦ 6 m C PAC ? How many seconds elapsed on your watch when she saw 23.0 s pass on hers? • ?

A friend speeds by you in her spacecraft at a speed of 0.790 c. It is measured in your frame to be 4.60 m long and 1.60 m high. Part A What will be its length at rest? lo= 7.50 m Submit ✓ Correct Correct answer is shown. Your answer 7.49 m was either rounded differently or used a different number of significant Part B What will be its height at rest? ho= 2.61 Part C Previous Answers [15] ΑΣΦΑ Submit Previous Answers Request Answer Submit Part D X Incorrect; Try Again; 4 attempts remaining 6 Part E How many seconds elapsed on your friend's watch when 23.0 s passed on yours? Δto = 14.1 s Submit Ato= Previous Answers → ✓ Correct Important: If you use this answer in later parts, use the full unrounded value in your calculations. IVE ΑΣΦ 3 [w] How fast did you appear to be traveling according to your friend? Request Answer ? IVE ΑΣΦ 6 m C PAC ? How many seconds elapsed on your watch when she saw 23.0 s pass on hers? • ?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter39: Relativity

Section: Chapter Questions

Problem 39.83AP: An alien spaceship traveling at 0.600c toward the Earth launches a landing craft. The landing craft...

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Two powerless rockets are on a collision course. The rockets are moving with speeds of 0.800c and 0.600c and are initially 2.52 × 1012 m apart as measured by Liz, an Earth observer, as shown in Figure P1.34. Both rockets are 50.0 m in length as measured by Liz. (a) What are their respective proper lengths? (b) What is the length of each rocket as measured by an observer in the other rocket? (c) According to Liz, how long before the rockets collide? (d) According to rocket 1, how long before they collide? (e) According to rocket 2, how long before they collide? (f) If both rocket crews are capable of total evacuation within 90 min (their own time), will there be any casualties? Figure P1.34
A spaceship, 200 m long as. seen on board, moves by the Earth at 0.970c. What is its length as measured by an earthbound observer?
(a) How long would the muon in Example 28.1 have lived as observed on the Earth if its velocity was 0.0500c ? (b) How far would it have traveled as observed on the Earth? (c) What distance is this in the muon's frame?
Calculate the momentum of a proton moving with a speed of (a) 0.010c, (b) 0.50c, (c) 0.90c. (d) Convert the answers of (a)(c) to MeV/c.
Owen and Dina are at rest in frame S, which is moving with a speed of 0.600c with respect to frame S. They play a game of catch while Ed, at rest in frame S, watches the action (Fig. P26.45). Owen throws the ball to Dina with a speed of 0.800c (according to Owen) and their separation (measured in S) is equal to 1.80 1012 m. (a) According to Dina, how fast is the ball moving? (b) According to Dina, what time interval is required for the ball to reach her? According to Ed, (c) how far apart are Owen and Dina, and (d) how fast is the ball moving? Figure. P26.45
Owen and Dina are at rest in frame S, which is moving with a speed of 0.600c with respect to frame S. They play a game of catch while Ed, at rest in frame S, watches the action (Fig. P26.45). Owen throws the ball to Dina with a speed of 0.800c (according to Owen) and their separation (measured in S) is equal to 1.80 1012 m. (a) According to Dina, how fast is the ball moving? (b) According to Dina, what time interval is required for the ball to reach her? According to Ed, (c) how far apart are Owen and Dina, and (d) how fast is the ball moving? Figure. P26.45
(a) How long would the mum] in Example 5.3 have lived as observed on Earth if its velocity was. 0.0500c? (b) How far would it have traveled as observed on Earth? (c) What distance is this in the muon’s frame?
(a) All but the closest galaxies are receding from our own Milky Way Galaxy. If a galaxy 12.0x109ly away is receding from us at 0.900c, at what velocity relative to us must we send an exploratory probe to approach the other galaxy at 0.990c as measured from that galaxy? (b) How long will it take the probe to reach the other galaxy as measured from Earth? You may assume that the velocity of the other galaxy remains constant. (c) How long will it then take for a radio signal to be beamed back? (All of this is possible in principle, but not practical.)
Suppose our Sun is about to explode. In an effort to escape, we depart in a spaceship at v = 0.80c and head toward the star Tau Ceti, 12 lightyears away. When we reach the midpoint of our journey from the Earth, we see our Sun explode and, unfortunately, at the same instant we see Tau Ceti explode as well. (a) In the spaceship’s frame of reference, should we conclude that the two explosions occurred simultaneously? If not, which occurred first? (b) In a frame of reference in which the Sun and Tau Ceti are at rest, did they explode simultaneously? If not, which exploded first?
Consider an electron moving with speed 0.980c. a. What is the rest mass energy of this electron? b. What is the total energyof this electron? c. What is the kinetic energy of this electron?
A muon formed high in the Earths atmosphere is measured by an observer on the Earths surface to travel at speed = 0.990c for a distance of 4.60 km before it decays into an electron, a neutrino, and an antineutrino (c+v+v). (a) For what time interval does the muon live as measured in its reference frame? (b) How far does the Earth travel as measured in the frame of the muon?
An alien spaceship traveling at 0.600c toward the Earth launches a landing craft. The landing craft travels in the same direction with a speed of 0.800r relative to the mother ship. As measured on the Earth, the spaceship is 0.200 ly from the Earth when the landing craft is launched, (a) What speed do the Earth-based observers measure for the approaching landing craft? What is the distance to the Earth at the moment of the landing craft's launch as measured by the aliens? What travel time is required for the landing craft to reach the Earth as measured by the aliens on the mother ship? (d) If' the landing craft has a mass of 4.00 10s kg. what is its kinetic energy as measured in the Earth reference frame?