Twin A makes a round trip at 0.6c to a star 12 light-years away, while twin B stays on the earth. Each twin sends the other a signal once a year by his own reckoning. How many signals does A send during the trip? А. 16 В. 20 С. 32 D. 40 O E. 50
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- 8. Adam and Avani are twins. On their 19th birthday, Avani leaves on a spaceship and travels at 0.80 c. Avani returns to Earth on the day that Adam is celebrating his 35th birthday. How old does Avani believe she is?If someone travels at v = 0.99c, she can become younger than her children (assuming the kids stay home on Earth). In one or two sentences, explain how this is possible.The star 61 Cygni A is 11.4 light-years from Earth. Imagine a spaceship that travels from Earth to 61 Cygni A at a constant speed of 0.921c. On Earth, we would measure the time it takes for the ship to reach the star to be 11.4 ly 0.921c = 12.4 years. (a) How much time (in years) would it take the ship to travel from the Earth to the star as measured by a traveler aboard the ship? years (b) What is the distance to the star (in light years) as measured by a traveler aboard the ship? ly
- 1. A spaceship A moves east along the x axis with a speed of 0.80c and a spaceship B moves west toward the spaceship A with a speed of 0.70c as measured by an observer on the Earth. Calculate the speed of the spaceship A measured by an observer in the spaceship B in terms of c.Two students, Nora and Allison, are both the same age when Allison hops aboard a flying saucer and blasts off to achieve a cruising speed of 0.750c for a 27.5 year round trip (according to Allison). Neglecting the brief time periods required for the acceleration of the ship during blastoff and turnarounds, find the difference in age between Nora and Allison when they are reunited. 27.5 difference in age: усars Incorrect Who is older? Allison Nora They are still the same age. need more information2. Please help me answer these questions, well explained. A spacecraft travelling at a speed of 0.95 c goes from the planet Jupiter to the planet Pluto. A. If an observer on planet Jupiter measures the length of the vessel as 55 m, how long is it when it is stationary? B. A monkey inside the ship has a pulse of 116 beats/min when he is on the earth. What is his pulse inside the ship?
- 2. Please help me answer these questions, well explained. A spacecraft travelling at a speed of 0.95 c goesfrom the planet Jupiter to the planet Pluto. A. If an observer on planet Jupiter mesures thelength of the vessel as 55 m, how long is it when it is stationary? B. A monkey inside the ship has a pulse of 116beats/min when he is on the earth. What is his pulse inside the ship?A rocket speeds by the earth at 0.77c. The earthlings measure the moving rocket to be 158 m long. What is the length of the rocket as measured by the passengers on the rocket? Please give your answer in meters. 247.63