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A body moving in an inverse square attractive field traverses an elliptical orbit with major axis 2a. Show that the time average of the potential energy V = -γ /r is -γ /a.
[Transform the time integral to an integral with repect to the eccentric angle ψ.]
Deduce the time average of the kinetic energy in the same orbit.
air is compressed in an isentropic process from an initial pressure and temperature of p1 90 kpa and t1 22 oc to a
The compression constant of the clay is C10 = 20. Predict the settlement of the soil by compression of the clay layer due to an additional load of 40 kPa.
In a lead-screw unit, the coefficient of friction μ was found to be greater than tan α, where α is the helix angle. Discuss the implications of this condition.
a furnace needs hot pressurized gas at 200 kpa. this gas is to be provided by the exhaust from a gas turbine operating
the pressure at the bottom of a swimming pool is evenly distributed. suppose we look at a cast iron plate of 7272 kg
steam having a mass of 3kg and initially at 2.5mpa and 350degc has 2460kj of heat removed at constant temperature until
The process and volume relation is given p=(8-4v)bar for a non flow process ,where V is in cubic meter.If 130kJ of work is supplied to the system,calculate the final pressure and volume of the system.Take the initial volume as 0.5 cubic meter.
a frictionless piston-cylinder contains argon which is initially at 25 deg. c with a volume of 2.2m3. the system is
Using the thermodata computed from the matlab functions to compute the mixture-averaged mass specific Gibbs free energy of the final mixture, as a function of the progress variable (normalized as: 0 for no dissociation, and 1 for complete dissociatio..
Calculate the surface temperature of the conductor - represent the radiation heat trans- fer rates for N shields and no shields, respectively.
Determine the increase in internal energy of 2 kg of argon if its temperature increases from 30C to 130C
determine the force in members cd and gf of the truss and state if the members are in tension or compresson. also
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