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I Review | Constants A star is 30.6 light-years from Earth. 7 PartA How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on Earth? m Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining W HUIP V PartB How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on the spacecraft? m Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining v PartC What is the distance traveled according to observers on the spacecraft? light-years I Review | v PartA Calculate the kinetic energy of a proton traveling 2.09x103 111/ s . Express your answer with the appropriate units. m Previous Answers Request Answer v PartB Calculate the momentum of a proton traveling 2.09:~ I Fleview | Constants A person struggles to read by holding a book at arm's length, a distance of 41 one away. 7 PartA What power of reading glasses should be prescribed for her, assuming they will be placed 2.0 cm from the eye and she wants to read at the "normal" near point of 25 cm ? Express your answer using two significant figures. m Previous Answers Request Answer 8 Incorrect; Try Again; 3 attempts remaining