Xena is going home from an interplanetary travel. Her ship is directed to Earth and is...
Xena is going home from an interplanetary travel. Her ship is directed to Earth and is traveling at speed v. When she is at a distance L from Earth (in her reference frame) she sends a signal to her husband Yan to get the dinner ready. In her reference frame the dinner takes a time tD to cook.
a) How far is she from Earth when she sends the signal in Yan’s reference frame?
b) How long will it take for the light to reach the Earth in her reference frame?
c) How long will it take for the light to reach the Earth in his reference frame?
d) How long after the signal will she arrive on Earth in his reference frame?
e) How long before Xena’s arrival should Yan put the dinner on the stove? (i.e., how long does it take to cook dinner in his reference frame?)
Use S for Xena’s reference frame and S’ for Yan’s.
Homework Answers
Add Answer to:
Xena is going home from an interplanetary travel. Her ship is
directed to Earth and is...
A rocket ship leave earth at a speed of 0.6clative to earth, where represents speed of...
A rocket ship leave earth at a speed of 0.6clative to earth, where represents speed of light in vacuum. When the clock on the rocket says 1 hours has elapsed, the rocket sends a light signal back to earth According to a clock on earth, when was the light signal sent? According to a clock on earth, how long after the rocket left earth did the light signal arrive (explain clearly)
Two stars z and p, are exactly in the opposite directions from the Earth. The distance...
Two stars z and p, are exactly in the opposite directions from the Earth. The distance to 'z' from earth is 80 light-years. The distance to 'p' is 90 light-years. Zerah takes off in the direction of z, at a speed of 0.8 c, while Perez takes off in the direction of p at the speed 0.9c. (distance between two stars in earth frame = 170c*y) (time to each star in earth frame = 100 years, simultaneous events in earth's...
piloting a state-of-the-art spaceship to α Centauri, which is a star about 4 lightyears away as measured from Earth. Your ship cruises at a speed of 0.6c. For this problem, you can assume that Ea...
piloting a state-of-the-art spaceship to α Centauri, which is a star about 4 lightyears away as measured from Earth. Your ship cruises at a speed of 0.6c. For this problem, you can assume that Earth and a Centauri are at rest with respect to each other. At your journey's midpoint, you decide to send a souvenir package to your folks back home. You launcha probe back to Earth at a speed of v 0.8c from your perspective. a. How long...
Amanda pilots a space ship away from earth at a speed of 0.810c. At some moment...
Amanda pilots a space ship away from earth at a speed of 0.810c. At some moment she sends a light pulse toward earth. Exactly one year later she sends another pulse toward earth. (a) As measured in an inertial frame in which the earth is at rest, what is the difference in time between the generation of the two pulses? (b) What is the difference in time between detection of the two pulses on earth? Treat the earth as stationary,...
Y a rocket of rest length 90 meters es traveling at speed yc directly away from...
Y a rocket of rest length 90 meters es traveling at speed yc directly away from the earth! The rocket encounters an asteroid of length? 80 nheters also traveling directly away from the earth but atspred zc. a) According to the captain of the rocket, what is the velocity of the rocket relative to the asteroid? (6) at the front of the rocket, the captain of the rocket becomes aware of the asteroid and activates a warning signal. It takes...
One of the primary goals of the Kepler space telescope is to search for Earth-like planets....
One of the primary goals of the Kepler space telescope is to search for Earth-like planets. Data gathered by the telescope indicates the existence of one such planet named Boralis orbiting a star 120 ly from our solar system. Consider an interstellar spaceship leaving Earth to travel to Boralis. The ship can reach 0.70c almost instantly and can also decelerate almost instantly. The ship is 175 m long in its reference frame. (a) What is the length of the moving...
One of the primary goals of the Kepler space telescope is to search for Earth-like planets....
One of the primary goals of the Kepler space telescope is to search for Earth-like planets. Data gathered by the telescope indicates the existence of one such planet named Boralis orbiting a star 120 ly from our solar system. Consider an interstellar spaceship leaving Earth to travel to Boralis. The ship can reach 0.96c almost instantly and can also decelerate almost instantly. The ship is 169 m long in its reference frame. (a) What is the length of the moving...
A and B leave from a common point (with both of their clocks reading zero) and...
A and B leave from a common point (with both of their clocks reading zero) and travel in opposite directions with relative speed v. When B’s clock reads T, he (B) sends out a light signal. When A receives the signal, what time does his (A’s) clock read? Answer this question doing the calculation entirely in a) A’s frame and then b) on B’s frame. I know the answer for both a) and b) is T/(y(1-c/v)), but I am not...
Duck Dodgers hops in his spaceship and leaves the Earth at a constant velocity of 0.6c...
Duck Dodgers hops in his spaceship and leaves the Earth at a constant velocity of 0.6c in an attempt to reach the newly discovered Planet X before aliens from Mars. a) Mission control on Earth sends an encoded message (a flashing beacon) to Duck Dodgers warning him about the progress of the Martian ship. The light pulses travel at a speed c relative to observers on the Earth. How fast are the pulses traveling relative to Duck Dodgers? b) Duck...
You are an observer in a 100-m long spacecraft traveling from the earth to the moon...
You are an observer in a 100-m long spacecraft traveling from the earth to the moon at 0.8c. (a) What is the proper length of the spacecraft? (b) For a proper time interval of 1 sec., the relativistic time interval for the spacecraft measured from the earth reference frame would be: (c) Time dilation does not apply to all time-dependent physical and biological processes. T/F? (d) What is the relativistic length, DL measured from the reference frame of earth? (e)...
piloting a state-of-the-art spaceship to α Centauri, which is a star about 4 lightyears away as measured from Earth. Your ship cruises at a speed of 0.6c. For this problem, you can assume that Earth and a Centauri are at rest with respect to each other. At your journey's midpoint, you decide to send a souvenir package to your folks back home. You launcha probe back to Earth at a speed of v 0.8c from your perspective. a. How long...
Y a rocket of rest length 90 meters es traveling at speed yc directly away from the earth! The rocket encounters an asteroid of length? 80 nheters also traveling directly away from the earth but atspred zc. a) According to the captain of the rocket, what is the velocity of the rocket relative to the asteroid? (6) at the front of the rocket, the captain of the rocket becomes aware of the asteroid and activates a warning signal. It takes...
One of the primary goals of the Kepler space telescope is to search for Earth-like planets. Data gathered by the telescope indicates the existence of one such planet named Boralis orbiting a star 120 ly from our solar system. Consider an interstellar spaceship leaving Earth to travel to Boralis. The ship can reach 0.70c almost instantly and can also decelerate almost instantly. The ship is 175 m long in its reference frame. (a) What is the length of the moving...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago