Consider a small parcel of gas in the cloud out of which the Sun formed that initially was located in the accretion disk at a distance of 10 AU from the Sun and rotating around it with a speed of 10 km/s.If this parcel of gas eventually found its way to a distance of 1 AU from the Sun without changing its orbital angular momentum, what would be its new rotation speed?
A) 100 km/s
B) 0.1 km/s
C) 0.001 km/s
D) 10 km/s
E) 1,000 km/s

Question

Quizplus · Accepted Answer

The conservation of angular momentum states that the product of the radius and the velocity must remain constant. Initially, the angular momentum is 10 AU * 10 km/s. At 1 AU, the velocity must be 100 km/s to conserve angular momentum.

Consider a Small Parcel of Gas in the Cloud Out