A millonairess was told in 1995 that she had exactly 15 years to live. However if she travels away from the Earth at 0.8c and then returns at the same speed, the last New Year's day the doctors expect her to celebrate is ___________
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A millonairess was told in 1995 that she had exactly 15 years to live. However if she travels away
from the Earth at 0.8c and then returns at the same speed, the last New Year's day the doctors expect
her to celebrate is ___________
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- 3 J = (the rest energy is 3 c2 A spacecraft moves at a speed of ().8c relative to Earth, and shots a bullet with rest mass of M Joules), and its velocity relative to Earth is in the same direction as the spacecraft. The kinetic energy of the bullet relative to Earth is 5 J. What is the total energy (in Joule) of the bullet relative to the spacecraft?Question 1 pleaseAn astronaut left Earth in a spaceship at a speed of 0.95c relative to an observer on Earth. The astronaut traveled to a star system 16.5 LY away. Neither the astronaut, nor the observer on Earth agreed how long trip took. Let Earth represent the rest frame What is proper length? Who has the proper length? Who has the proper time? what is the proper time? What is the difference between the passage of time recorded by someone on Earth versus someone on the spaceship. rest frame a. Who had proper length?
- 1. 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? (c) What is the relativistic length, DL measured from the reference frame of earth? (d) An APOLLO crew left a flat mirror reflector on the surface of the moon (for all you deniers out there, in the 50th anniversary year of APOLLO 11!). If the average surface-to-surface distance from the earth to the moon is 3.83 x 10^8 m, then how long does it take moonlight to reach earth?A ship is heading off to Bernard's star at 0.700c. As it passes a space station (at rest with respect to the Earth) a few days out from Earth, the ship fires a "photon torpedo" in the forward direction and another in the reverse direction. the torpedoes have a speed relative to the ship of 0.700c. On a space-time diagram, determine the direction and speed of each torpedo as seen by the station. Check your answers using the relativistic addition of velocities formula.I need help on question 9?
- You and vouur archenemy pass each other in rockets that are each traveling 0.2c relative to the other. You observe that your rocket (which you have measured to be 281 m Jong ten times as long as your archenemy's spaceship. How long is your rocket in your archenemy's frame? How long is your archenemy's rocket in their frame?A newly constructed spaceship has a length of 100.0 m (as measured in the rest frame). This spaceship departs the Earth, bound for a distant planet located a distance D = 50.0 light-years away from the Earth. It travels at a constant speed of v = 0.900c. Part A) As measured by Mission Control on Earth, how long does the journey take? Enter the numerical value in units of years. Part B) According to an astronaut on the spaceship, how long does the journey take? Enter the numerical value in units of years. Part C) As measured by Mission Control on Earth, what is the spaceship's apparent length? Enter the numerical value in SI unitsYou and a friend pass each other in spaceships that are each traveling 0.41c relative to the other. You observe that your spaceship (which you have measured to be 225 m long) is the exact same length as your friend's spaceship. How long is your friend's spaceship in their frame? How long is your spaceship in your friend's frame? = ______ =________