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Calculate the Gibbs free energy change of a rubber band stretched to 5 times its original length with concurrent contractions in its other two dimensions of 2.24 times at 25 C. The number of rubber molecules per unit volume, N, for a typical rubber is about N=10NA #/m^3 , where NA is Avogadro’s number.
A cylindrical specimen of a titanium alloy having an elastic modulus of 107 GPa and an original diameter of 4.0 mm will experience only elastic deformation when a tensile load of 1,500 N is applied. Find the maximum length of the specimen before defo..
estimate the rate in galhr that your car uses gasoline when it is being driven on an interstate highway. determine how
an air standard diesel cycle has a compression ratio of 20 and the heat transferred to the working fluid per cycle is
Calculate the expected number of vacancies that will exist in a cubic inch of Aluminum at room temperature (25°C), provided that the activation energy for vacancy formation in Aluminum is equal to 0.75 eV/atom.
a mass of 12kg of saturated refrigerant-134a vapor is contained in a frictionless piston-cylinder device at 240kpa. now
Water vapor in a piston-cylinder assembly undergoes a process from saturated vapor at 150°C to a pressure of 300 kPa. During the process, the pressure and specific volume are related by pv 1.2 = constant. Neglecting kinetic and potential energies, d..
water is drawn at steady state from a body up 15 m to a storage tank by a pump. pressure at the opening of the pump is
You have a 120 Ω quarter bridge 2 wire set up with Sg=2.10 and an unknown lead wire resistance. A 59880Ω calibration resistor is switched in parallel to the gage only and a recording instrument is set to give a -100 mm deflection for this calibrat..
Water at 20°C flows past a circular cylinder in cross-flow at a free stream velocity of 0.5 m/s. The cylinder is 0.02m in diameter and has a length of 0.5m in the cross-stream direction. The cylinder is at a temperature of 60°C. Find the rate at whic..
a cantilevered boom is part of an assembly machine. a tool with a weight of 500lb moves continuously from the end of
a 90 percent efficient turbine accepts water at 400 kpa in a 16 cm diameter pipe. what is the maximum power output if
The acceleration of the car is defined by a=(2t^2+t)m/s^2. Find the position of the car at t = 3 seconds. The car starts from rest.
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