A cube has a mass of 100 grams and its density is determined to be 1 g/cm3. The volume of the cube must be . 0.1 cm3 1 cm3 10 cm3 100 cm3

  The volume of the block will be

Explanation:

Density is defined as the mass contained per unit volume.

Given : Mass of cube = 100 grams

Density of cube =

Putting in the values we get:

 Thus volume of the block will be

less than one you can't create energy

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.