Related questions
Question
Transcribed Image Text:Twin A makes a round trip at 0.6c to a star 18 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?
OA, 24
OB. 30
O c. 48
O D. 60
O E. 50
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 3 steps with 3 images
Knowledge Booster
Similar questions
- 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?arrow_forward12. Starship "A" is traveling at 0.8c with respect to the identical starship "B". Each starship has rest length 10000 m. The ship's engineer aboard the "B" ship measures the length of the "A" ship as it passes by his window. What result should he get? 12500 m O 15000 m 6000 m 8000 m None of the answersarrow_forward1. 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.arrow_forward
- 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 informationarrow_forwardA star is 16.6 light-years from Earth. Part A How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on Earth? tEarth 17.5 years Submit ✓ Part B Correct How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on the spacecraft? t = 5.46 years Submit ✓ Previous Answers Part C Correct Submit What is the distance traveled according to observers on the spacecraft? 15.18 light-years Previous Answers Part D Correct Previous Answers v= 5.18 What will the spacecraft occupants compute their speed to be from the results of part B and part C? IT| ΑΣΦ Submit Previous Answers Request Answer ? X Incorrect; Try Again; 3 attempts remaining .Carrow_forwardAs spaceship A moves away from the earth at 0.550c, the captain observes a second spaceship (B) moving in the same direction at a speed of 0.518c relative to A. Find the speed of B relative to the earth. сarrow_forward
- 1. If a subatomic particle moves close to the speed of light. Its decay would occur ___? 2. A space explorer travels between asteroids that are 100 000 m apart. His/her space probe travels with constant speed of 0.8c=2.4x108 m/s. What is the time of the trip between asteroids measured by observer on one of the asteroids? Write your answer rounded to 2 decimal places in msarrow_forwardA star is 16.6 light-years from Earth. Part A How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on Earth? tEarth 17.5 years Submit ✓ Correct Correct answer is shown. Your answer 17.47 years was either rounded differently or used a different number of significant figures than required for this part. Part B How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on the spacecraft? t = 5.46 years Submit Part C Previous Answers Correct What is the distance traveled according to observers on the spacecraft? 15.18 light-years Previous Answers Submit Previous Answers Part D V = Correct What will the spacecraft occupants compute their speed to be from the results of part B and part C? 3.29 IVE ΑΣΦ Submit Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining •Carrow_forwardTwin 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?arrow_forward
- 1. A cosmic ray particle enters the Earth's atmosphere at 97% of the speed of light (0.970c). The proper time of travel to the ground is 2.749 x 10 sec. What is the relativistic, 'dilated' time? 2. The Starship Enterprise, according some Trekkie analysts, is 300 meters long. If it is traveling at 0.952c, what would its length, L, be as seen from Earth? [Ch 28] 3. A given photon has a frequency of 6.5 x 10" sec". What is this photon's energy? CHAPTER 29-30 The electron in a hydrogen atom undergoes a transition from the 2nd excited state (n-3) to the ground state (n-1).* How much energy, in eV, will be given off by the electron? Use three significant figures. Note that, for hydrogen, E, =-13.6 eV. *This is a transition in the Lyman series, which involves transitions between n= 1 and higher states. The wavelengths are in the ultraviolet. The Balmer series, which involves transitions between n 2 and higher states, yields light in the visible.arrow_forwardSpaceship R is moving to the right at a speed of 0.733c with respect to Earth. A second spaceship, L, moves to the left at the same speed with respect to Earth. What is the speed of L with respect to R?? carrow_forwardPlz solvearrow_forward
arrow_back_ios
arrow_forward_ios