Question

Show explicitly, using equations, how you will use your measurements to calculate the fluid density p. Start by identifying any symbols you use in your equations.

Answer 1

To calculate the fluid density of a foam sample, measure the sample's mass and the volume of water it displaces, ensuring units are consistent, and use the equation D = m/V.

Step-by-step explanation:

To calculate the fluid density (p) of a foam sample using the water displacement method, you must use the mass (m) of the foam and the volume (V) of water it displaces. The equation to determine density is D = m/V, where 'D' is density, 'm' is mass, and 'V' is volume.

First, measure the mass of the foam sample using a scale. Next, submerge the foam in water and measure the volume of water displaced, which is equal to the volume of the foam. Ensure that the mass and volume are in the same unit system (e.g., grams for mass and cubic centimeters for volume).

Finally, fill in your measurements into the density equation to find the foam's density: p = m/V. Confirm that the units for density are consistent - typically kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³).