1.4. Density and Specific Weight

Try these first

1. 1.

   What is the formula for calculating density?

   Hint

   Remember, density involves mass and how much space it occupies.

2. 2.

   Convert 1 m³ of water into kilograms.

   Hint

   Recall: The density of water is 1000 kg/m³.

3. 3.

   What is density defined as?

   • Mass per unit time
   • Mass per unit volume
   • Volume per unit mass

   Hint

   Think about how much mass is packed in a given volume.

4. 4.

   True or False: Specific weight is the weight per unit mass.

   • True
   • False

   Hint

   Consider how weight is related to volume, not directly to mass.

5. 5.

   A tank holds 500 liters of oil with a density of 850 kg/m³. Calculate the specific weight of the oil.

   Hint

   Use the specific weight formula with gravitational acceleration.

6. 6.

   Compare the densities of fresh and seawater. If fresh water is 1000 kg/m³ and seawater is 1025 kg/m³, explain why objects float differently in them.

   Hint

   Recall how density affects buoyancy and floating.