Field of NoThingness - spl BiNal

With what the terminal velocity will an air bubble $1\;mm$ in diameter rise in a liquid of viscosity $150\;poise$ and density $0.9\;g/cm^3$?

What is the terminal velocity of a glass ball falling through a tall jar containing glycerine? The densities of the glass ball and glycerine are $8.5\;g/cc$ and $1.32 \;g/cc$ respectively and the viscosity of the glycerin is $0.85\;poise$ and radius of the glass ball is $2\;mm$.

What is the terminal velocity of a glass ball falling through a tall jar containing glycerine? The densities of the glass ball and glycerine are $2.6\;g/cc$ and $1.32 \;g/cc$ respectively and the viscosity of the glycerine is $0.85\;poise$ and radius of the glass ball is $2\;mm$.

Water flows steadly through a horizontal pipe of non-uniform cross section. If the pressure of water is $4 * 10^6\;N/m^2$ at a point where the velocity of flow is $2\;m/s$ and cross section is $0.02\;m^2$, what is the pressure at a point where cross-section reduces to $0.01\;m^2$?

Two drops of same liquid of same radius are falling through air with steady velocity of $2\;m/s$. If the two drops coalesce what would be the terminal velocity?

Three spherical raindrops of equal size are falling vertically through air with a terminal velocity of $0.15\;m/s$. What would be the terminal velocity if these three drops were to coalesce to form a large spherical drop?

Three spherical raindrops of equal size are falling vertically through air with terminal velocity $0.2\;m/s$. What would be the terminal velocity if these three drops were to coalesce to form lager spherical drops?

Eight spherical raindrops of equal size are falling vertically through air with a terminal velocity of $0.15\;m/s$. What would be the terminal velocity, if they coalesce to form a big drop?

Calculate the magnitude and direction of the terminal velocity of an air bubble of radius $1\;mm$ passing through an oil viscosity $0.2\;N\,s\, /m^2$ and specific gravity $0.9$ if the density of air is $1.29\;kg/m^3$.

Calculate mass of an aeroplane with the wings of area $55\;m^2$ flying horizontally. The velocity of air above and below the wings is $155\;m/s$ and $140\;m/s$ respectively.

Castor oil at $20^{\circ}\;C$ has a coefficient of viscosity $2.42\;N\,s\, /m^2$ and density $940\; kg/m^3$. Calculate the terminal velocity of steel ball of radius $2\;mm$ falling under gravity in the oil, taking density of steel as $7800\;kg/m^3$.

Eight spherical rain drops of the same mass and radius are falling down with a terminal speed $5\;cm/s$. If the coalesce to form one big drop, what will be its terminal speed?

Why soldiers are ordered to break steps while crossing a bridge?

A steel wire of density $8000\;kg/m^3$ weights $24\;gm$ and is $250\;cm$ long. It lengthens by $1.2\;mm$ when stretched by a force of $80\;N$. Calculate the Young's modulus for the steel and the energy stored in the wire.

Find the work done in stretching a wire of cross-sectional area $10^{-2}\;cm^2$ and $2\;m$ long through $0.1\;mm$, if $Y$ for the material of wires is $2\;*\;10^{11}\;N/m^2$.

How much force is required to punch a hole 1 cm in diameter in a steel sheet $5\;mm$ thick whose shearing strength is $2.76 \; * \; 10^8\;N/m^2$.

A vertical brass rod of the circular section is loaded by placing a $5\;kg$ weight on top of it. If its length is $50\;cm$ and radius of the cross-section is $1\;cm$, find the contraction of rod and the energy stored in it.

A uniform steel wire of density $7800\;kg/m^3$ weights $16\;gm$ and is $250\;cm$ long. It lengthens by $1.2\;mm$ when stretched by a force of $80\;N$. Calculate the Young's modulus and the energy stored in the wire.

A steel cable with a cross-sectional area $3\;cm^2$ has an elastic limit of $2.4\;*\;10^8\;pa$. Find the maximum upward acceleration that can be given a $1200\;kg$ elevator supported by the cable if the stress does not exceed one-third of the elastic limit.

Calculate the work done in stretching a steel wire $100\;cm$ in length and of cross-sectional area $0.03\;cm^2$ when a load of $100\;N$ is slowly applied before the elastic limit is reached.

What force is required to stretch a steel wire of cross-sectional area $1\;cm^2$ to double its length?

A uniform steel wire of density $8000\;kg\;m^{-3}$ weight $20\;gm$ and is $2.5\;m$ long. It lengthens by $1\;mm$ when stretched by a force of $80\;N$. Calculate the value of the Young's modulus of steel and the energy stored in the wire.

How did the universe begin? | Field of NoThingness