A sheet of metal is 2 mm wide, 10 cm tall and 15 cm long. It was 4 grams. What is the density? *

Density of metal = 0.13 g/ cm³

Explanation:

Given data:

Width of metal sheet = 2 mm = 2/10 = 0.2 cm

Length of metal sheet = 15 cm

Height of metal sheet = 10 cm

Mass of sheet = 4 g

Density of metal = ?

Solution:

Density:

Density is equal to the mass of substance divided by its volume.

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

d =m/v

Volume =  width×  height ×  length

Volume = 0.2 cm× 10 cm× 15 cm

Volume = 30 cm³

d = 4 g/ 30 cm³

d  = 0.13 g/ cm³

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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