#### Surface Tension of Mercury and Water in Glass

Water rises to a height of 5 cm in a certain glass capillary tube. In the same tube the level of mercury surface is depressed by 1.54cm. Compare the surface tensions of water and mercury. Specific weight of Mercury is 13.6 x10^3 Kg/m^3 and that of water is 10^3 Kg/m^3. Angle of contact of glass with...

#### Window Thickness To Maintain Safe Heat Level

A new oven has been designed which has self-cleaning capability. The oven window must be from two transparent high temperature polymers (A and B) with thermal conductivities of K_A=0.15 W/mK and K_B=0.08 W/mK. Thickness of layer Ais twice as much as layer B. During the self-cleaning the oven wall an...

#### Combined heat loss through conduction and convection

Super heated steam at 500K flows through a steel pipe (outside dia. Of 15cm and a wall thickness of 0.7cm, k=54 W/mK). The pipe is insulated with a 5.3cm thick layer of an insulation (k=0.073 W/mK). The outer layer of insulation is at 27C. The sum of radiation and convective heat transfer coefficien...

#### Numerical Methods Differential Equations

On the first test we looked at a cooling tank for a radioisotope test facility. From Geometry and calculus we can determine that the relationship between the volume of the heavy water (m^3) and the height of the water (m) in the storage tank is given by the following equation: V = pi . h^2 . ((3R...

#### Pump Problem: Flow Rate and Elevation Calculation

Ethylbenzene at 40 degrees C is delivered by a pump from a storage tank to a reactor elevated 3.5 m above the pump. The pressure at the inlet to the reactor is 1.5 barg. There is a control valve in the line, with a pressure drop of 0.75 bar across it. the flowrate of ethylbenzene is 8 L/s. What i...

#### Finding the Differential Reading Height

See attached file for full problem description. A U-tube mercury manometer is connected to a closed pressurized tank as illustrated in the Figure below. If the air pressure is 2 psia, determine the differential reading (height) h. The specific weight of the air is negligible. Assume fluids are...

#### Job Analysis of a Chemical Engineer

Develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist human resources professionals to choose, train, and develop successful employees toward helping the company meet its goals. - Reference at least one human resou...

#### Chemical Engineering Review Questions

65) A 40,000 lb rocket is launched from sea level straight up, then falls back to earth. The total flight time was 160 seconds. The rocket reached its apex in 1 minute and 20 seconds. What altitude did the rocket reach before falling back to earth? A) More than 25 miles. B) Between 15 and 25 miles...

#### Pump behavior analysis

A 150mm model pump rotating at 1750 rpm has the following characteristic... A geometrically similar 200 pump having a similar efficiency curve is used to pump water through... Also answer this question after you solve the attachment question. If the size of the pump were 275 mm , then what ...

#### Lowest standard deviation of measurements

As the Quality Control Manager of a chemical company, you are asked to decide between several process methods that are supposed to uniformly mix 37.4 milligrams into a chemical solution. The resulting solutions from each process are sample tested for uniformity. The test samples yielded the followin...

#### Biomedical Engineering - Tibia Stretcher

An adjustable device is designed to apply a traction to stretch the tibia. It is attached to the tibia by rigid pins as illustrated below. There is a mechanism for length adjustable in the centre of the vertical section. Draw a free-body diagram for each of the three straight sections of the device,...