Answer both parts.
Part 1: The closest star to our solar system is Alpha
Centauri, which is 4.30 light years away. A spaceship with a
constant speed of 0.800 c relative to the Earth travels toward the
star. (a) How much time would elapse on a clock on board the
spaceship? (b) How much time would elapse on a clock on the
Earth?
Part 2: What is the surface temperature of a star, given
that its radiation peak occurs at a frequency of 1.86 x
1015 Hz?