Convert each of the measurements given to the new unit stated using the factor label method (dimensional analysis). Show all work including rewriting the given. Two step conversions:

26 cm to ft. _
16 lb to g _
1 yr to s _
3.5 mi to km _

What is the density of the black hole

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

How many atoms are there in 5.70 mol of mg