Iron has a density of 7.9 g/cm3. what is the mass of a cube of iron with the length of one side equal to 55.0 mm?

Mass, m = 1.31 kg

Explanation:

It is given that,

Density of iron,

Side of cube, a = 55 mm = 5.5 cm

We need to find the mass of the cube of iron. Mass per unit volume is called the density of the substance. It is given by :

m = 1314.36 grams

or

m = 1.31 kg

So, the mass of the iron cube is 1.31 kg. Hence, this is the required solution.

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

gravitational energy

electrical energy

kinetic energy

ligh energy