Author Question: Polaris is 132 pc from Earth and has an absolute visual magnitude of 3.1 . What is the apparent ... (Read 60 times)

clippers! · **on:** Jul 27, 2018

Polaris is 132 pc from Earth and has an absolute visual magnitude of 3.1 . What is the apparent visual magnitude of this star?

a. 0.74 b. 1.18
c. 0.5 d. 2.5

Question 2

Similar to our Sun, pulsars' rotations are believed to slow down because

a. they are losing angular momentum into space via outward streaming particles.
b. they are dragging companion stars around in their magnetic field.
c. they are getting tired.
d. of conservation of angular momentum.
e. their mass is increasing.