You wish to perform experiments to determine the pressure drop from the entrance to exit of a 0.15 m diameter 90 degree elbow constructed of smooth plastic. The fluid is ethanol (ethyl alcohol) at 20 degrees C, flowing at 5 m/s. a) What is the dependent variable in this problem

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

increase masses, decrease separation

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.