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A pipe of diameter 60 mm is gripped by the stillson wrench shown. Portions AB and DE of the wrench are rigidly attached to each other, and portion CF is connected by a pin at D. If the wrench is to grip the pipe and be self-locking, determine the required minimum coefficients of friction at A and C.
consider a single crystal cylindrical specimen of iron oriented such that a tensile load is applied along a 010
a closed well insulated tank contains 10 kg of air at 300 k. an electric motor drives a propeller inside the tank
During an expansion process, the pressure of a gas changes from 10 to 97 psia according to the relation P = aV + b where a = 5.1 psia/ft3 and b is constant. If the initial volume of the gas is 7.6 ft3, calculate the work done during the process.
compressor air enters 100 kpa and 17c and exits compressor 600 kpa and 167c. mass flow rate of air is 2 kgmin amp power
A man goes to a traditional market to buy a steak for dinner. He finds a 12-oz steak (1 lbm = 16 oz) for $3.15. He then goes to the adjacent international market and finds a 320-g steak of identical quality for $2.80. Which steak is the better buy..
a thin metal plate is insulated on the back and exposed to solar radiation on thenbspfront surface. the exposed surface
Water flows through a 2 cm diameter pipe at 1.6 m/s. Calculate the Reynolds numberand find also the velocity required to give the same Reynolds number when the pipe istransporting air. For the water the kinematic viscosity was 1.31*10^-6 m^2/s and th..
oxygen is flowing through a nominal 2 inch schedule 40 steel pipe pipe at a velocity of 10 fts. the oxygen is at a
The rational and optimal selection of materials underpins all engineering endeavours. In individual tutorials and class exams, you will practice various aspects of the materials selection process as follows: defining a component function statement..
If pulling on an elastic rod causes it to contract perpendicular to the stretch direction (i.e. become thinner), is that proof of anisotropy? Or could the material be isotropic?
r-134a is loaded into a weighted pistoncylinder unit. the mass of refrigerant is 10 kg. before heating measurements
A hollow steel sphere with a 0.5 m inside diameter and a 2 mm thick wall contains water at 2MPa, 250°C. The system (steel plus water) cools to the ambient temperature, 30°C. Calculate the net entropy change of the system and the surroundings for this..
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