Mass per unit area of an 7 inch by 10 inch lead sheet that weighs 192 gm is 0.425 g/cm²
Solution:
Given the following data;
Mass = 192 grams
Dimensions = 7 * 10 inches.
To find the mass per unit area;
Area = 7 * 10
Conversion:
1 square inch = 6.452 square centimeters
70 inches = 70 * 6.452 = 451.64 square centimeters
The mass per unit area;
M/A = 192/451.64
M/A = 0.425 g/cm²
The mass per unit area of a two-dimensional object is known as the area density (also known as areal density, surface density, superficial density, areic density, mass thickness, column density, or density thickness). The kilogram per square metre (kg m 2) is the SI-derived unit.
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