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A piston - cylinder device initially contains 0.1 m^3 of nitrogen gas at 150 kPa and 130 °C. The nitrogen is now expanded polytropically to a state of 120 kPa and 115 °C. Determine the following: (a) The mass (kg) and volume (m^3) of the nitrogen at the initial state? (b) The boundary work done during the process, in kJ?
Also determine the axial force and deformation of the diameter due to temperature rise. Let E = 120 GPa and Co-efficient of linear thermal expansion = 0.0000168 per °C.
two 20mm steel plates are welded to a rolled S section as shown. Determine the moments of inertia and the radii of gyration of the combined section with respect to the centroidal x and y axes.
a particle moves along the positive x-axis with an acceleration ax in meters per second squared which increases
Estimate the time necessary to achieve the same concentration at a 5.3-mm position for an identical steel and at the same carburizing temperature.
determine the smallest horizontal force required to lift the 260- crate. the coefficient of static friction at all
brass balls each of mass 0.258 kg and initially at 130degc are quenched in a water bath at 50degc for 2 minutes at a
The motion of a particle in defined by the relation x = t3 - 15 t2 - 20, where ‘x' is expressed in metres and ‘t' in seconds. Determine the acceleration of the particle at t = 3 seconds.
the hybrid vehicle engine produces an average of 25 kw of power output and has an efficiency of 65. assume it runs 200
a retarding force is applied to a body moving in a straight line so that during an interval of its motion its speed u
A Pitot tube measures the total pressure on an airplane flying at sea level as 1.07 x 10^5 N/m^2. What is the velocity of the airplane?
For this same component and alloy, compute the stress level at which fracture will occur for a critical internal crack length of 6.0mm.
nitrogen is compressed in a polytropic process with n 1.2 from 120 kpa and 10oc to 800 kpa in a piston-cylinder
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