The distance to a particular star, as measured in he earth's trame of reference, is 734 ly (1 ight year is the dstance light travels in 1 y). A spaceship leaves earth headed for the star, and takos 3.66 y to arrive, as measured by passengers on the ship

Could you please help me with finding these 2 distances?

Which of the following will result in a dimensionless number if x and y have length dimensions, z has mass dimensions, and a has time dimensions?

The speed of light in free space has been measured to be 2.99792458 × 108 m/s. (A) 3 Significant Figures  (B) 5 Significant Figures (C) 7 Significant Figures

The remaining lifetime of the Sun in seconds is 1.5 x 10¹7 sec. Convert this value into years. 0000000000000000 PLS HELP!

A 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 •C

Five clocks are being tested in a laboratory. Exactly at noon, as determined by the WWV time signal, on successive days of a week the clocks read as in the following table. Rank the five clocks according to their relative value as good timekeepers, best to worst. Give the number of the correct clock in each case. Which clock is (a) the best timekeeper? (b) the second-best timekeeper? (c) the third-best timekeeper? (d) the fourth-best timekeeper? (e) the worst timekeeper? Clock Sun. Mon. Tues Wed. Thurs. Fi. Sat. A. 12:36:40 12:36:56 12:37:12 12:37:27 12:37:44 1237-59 12:38:14 11:59:59 12:00:02 11:59-57 12:00:07 12:00:02 11:59:56 12:00:03 B 15:50:45 15:51:43 15:52-41 15:5339 15:54:37 15:5535 155633 D 12:03:59 12:0252 1201:45 12:00:38 11:59:31 11:58:24 11:57:17 E 12:03:59 12:02:49 12:0154 12:01:52 1201:32 1201:22 1201:12 (a) (b) (c) (d) (e) MacBook Pro G Search or type URL @ 23 $ % & 2 3 4 5 6 7 9 Y P W F G H K C V N * 00

The speed of light in free space has been measured to be 2.99792458 x 108-m/s.Express the speed of light to (a) three significant figures, (b) five significant figures, and (c) seven significant figures.

If massQ/mass A in AQ= 0.271 and mass Q/ mass A in AxQy = 0.362, what is the formula of AxQY?

Please!!! check both papers it is a b and c