Agraduated cylinder contains 17.5 ml of water. when a metal cube is placed onto the cylinder, its water level rises to 20.3 ml

2.8 mL

Explanation:

The question is incomplete. This is the complete version:

A graduated cylinder contains 17.5 mL of water. When a metal cube is placed into the cylinder, its  water level rises to 20.3 mL. Calculate the volume of the cube?

Volume is the amount of space occupied by an object. So when the cube is immersed in the water, the water level rises because the water has to move up to make room for the space now occupied by the metal cube. It is for that reason that we find the volume of the cube by subtracting the volume of the water without the cube from the total volume of both.

Volume = final water level - initial water level(without the cube)

             = 20.3 mL - 17.5 mL

             = 2.8 mL

close lines strong magnet less close weaker

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.