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

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.