Question

(1)(A)How fast would a 19 ft long sports car have to be going past you in order for it to appear only 11 ft long? Express your answer in terms of the speed of light, c.

(B)A space probe speeding toward the nearest star moves at 0.260c and sends radio information at a broadcast frequency of 6.40 GHz. What frequency (in GHz) is received on Earth?

(C)A nuclear power plant converts energy from nuclear fission into electricity with an efficiency of 35.0%. How much mass (in kg) is destroyed in one year to produce a continuous 1120 MW of electric power?

(D)hat is the momentum of a 1800 kg satellite orbiting at 7.30 km/s? (Enter your answer to at least 4 significant figures.) Find the difference between the relativistic momentum and the classical momentum for the situation in part (a). (Express your answer to at least 3 significant figures.)

Answer 1

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