Solve the all parts of given problem:

Problem: A spacecraft flies away from the earth with a speed of4.00×106 m/s relative to the earth and then returns at the same speed. The spacecraft carries an atomic clock that has been carefully synchronized with an identical clock that remains at rest on earth. The spacecraft returns to its starting point 365 days (1 year) later, as measured by the clock that remained on earth.

Part I: What is the difference in the elapsed timeson the two clocks, measured in hours?

t = __________hr

Part II: Which clock, the one in the spacecraft or the one on earth, shows the smallest elapsed time?

Please show all work and clearly explain. Thanks.