19. Fluid Mechanics

A ball has a density of $0.5g/\mathrm{ml}$ and a mass of $125g$. What is the volume of the ball?

Which physical phenomenon is primarily caused by density differences within fluids?

Which of the following is an example of a medium with high $density$?

If a fixed mass of air is compressed isothermally to half its original volume, by what factor does its density increase?

Given that a table tennis ball has a mass of $2.7g$ and a diameter of $40\mathrm{mm}$, what is the average density of the ball in $\mathrm{kg}/m^3$? (Assume the ball is a perfect sphere.)

Which term refers to the density of the medium's particles at the compression region of a sound wave?$\rho$

If the mass of an object remains constant but its volume increases, what would happen to the density of this object ($d=\frac{m}{V}$)?

A bell is rung in a room. What best describes the density of the air around the bell as the sound travels through it?

Two cylinders, X and Y, are made of the same material and have equal masses. Cylinder X has a density of $8g/\mathrm{cm}{3}^3$ and cylinder Y has a density of $4g/\mathrm{cm}{3}^3$. Which best compares the volumes of cylinder X and cylinder Y?

If an object has a mass of $m$ and a volume of $V$, and assuming a constant density, what is the correct formula for its density $\rho$?

A balsa wood wing has dimensions $27.5\mathrm{cm}$ × $6\mathrm{cm}$ × $0.15\mathrm{cm}$. If the density of balsa wood is $0.16g/{\mathrm{cm}}^3$, what is the mass of the wing?

When the weather forecast reports that atmospheric pressure is rising, what is happening to the air density?

Areal density refers to which of the following quantities?

A cylindrical specimen of brass has a diameter of $20 \mathrm{mm}$ and a height of $100 \mathrm{mm}$. If its mass is $0.27 \mathrm{kg}$, what is the density of the brass in $\mathrm{kg}/m^3$?

Which of the following statements about air is correct?