- Question 4 Of 10 View Policies Current Attempt In Progress An Armada Of Spaceships That Is 1 60 Ly Long In Its Rest Fra 1 (90.58 KiB) Viewed 32 times
- Question 4 Of 10 View Policies Current Attempt In Progress An Armada Of Spaceships That Is 1 60 Ly Long In Its Rest Fra 2 (59.2 KiB) Viewed 32 times
.Question 4 of 10 View Policies Current Attempt in Progress An armada of spaceships that is 1.60 ly long (in its rest frame) moves with speed 0.700c relative to the ground station in frame S. A messenger travels from the rear of the armada to the front with a speed of 0.960c relative to S. How long does the trip take as measured (a) in the messenger's rest frame, (b) in the armada's rest frame, and (c) by an observer in frame S? (a) Number i (b) Number (c) Number Units Units -/1 = Units
Question 10 of 10 View Policies Current Attempt in Progress Quasars are thought to be the nuclei of active galaxies in the early stages of their formation. Suppose a quasar radiates energy at the rate of 1041 W. At what rate is the mass of this quasar being reduced to supply this energy? Express your answer in solar mass units per year (smu/y), where one solar mass unit (1 smu = 2.0 × 1030 kg) is the mass of our Sun. Number i -/1 = Units