1. The gas in a bipolar flow can travel as fast as 100 km/s. If the length of the jet is 1 ly,… 1 answer below »

1. The gas in a bipolar flow can travel as fast as 100 km/s. If the length of the jet is 1 ly, how long does it take for a blob of gas to travel from the protostar to the end of the jet? 2. If a protostellar disk is 200 AU in radius and the disk plus the forming star together contain 2 solar masses, what is the orbital speed at the outer edge of the disk in kilometers per second? (Hint: See the formula for circular orbital velocity, Chapter 4.)  

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