Question: Question 3 (1 point) The equation E - mc illustrates that O travelling at the speed of light converts matter into energy rest mass and

Question 3 (1 point) The equation E - mc illustrates that O travelling at the speed of light converts matter into energy rest mass and energy are equivalent energy can be converted into mass matter can be converted into energy O both b and d Question 4 (1 point) A spaceship travelling past Earth with a speed of 0.90c, relative to Earth, is measured to be 45.0 m long by observers on Earth. What is the proper length of the spaceship? O 103 m 14.2 m 142 m 19.6 m

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