B = B= = Atobserver yAtmoving , Lobserver L moving 7 C=3.0 x 108 m/sec, V1 - B2 V1 + V2 B| А = UBIC + UCLA , W = 1+ U102 E = hf hc , df = c, KEmax = eV, = hf – 0, X - to = h (1 mec cose), 1 EO ph m , c = 3.0 x 108 m/sec , me = 9.11 x 10-31 kg, Eph + KE, KE zmev?, 1 nm = 1 x 10 h = 4.14 x 10-15 eV · sec , h = 6.63 x 10 2 -34 J · sec 1 eV = 1.60 x 107 -19 J, 1 keV - 1000 eV 7
Problem 1: A rocket is traveling to the nearest star, Proxima Centauri, at a speed of 0.8c. The distance between the Earth and Proxima Proxima Centauri is 4.2 ly, as measured by an observer on Earth. (a) What is the time it takes for the rocket to reach Proxima Centauri, as measured my an observer on Earth? Express your answer in years. (b) What is the distance between the Earth and Proxima Centauri, as measured by an observer inside the rocket? Express your answer in light years. (c) What is the time it takes for the rocket to reach Proxima Centauri, as measured my an observer inside the rocket? Express your answer in years.
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