Acube made of an unknown material has a height of 9 symeters the mass of this cube is 3645 g. calculate the density of this cube given this information

Explanation:

The density of a material is given by:

(1)

Where:

is the mass of the cube

is the volume of the cube

Now, the volume of a cube is equal to the length of its edge to the power of 3:

(2)

If we know , the volume of this cube is:

(3)

Substituting (3) in (1):

(4)

This is the density of the cube

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic