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During the isothermal heat addition process of a Carnot cycle, 900 kJ of heat is added to the working fluid from a source at 400 degrees Celcius. Determine
(a) the entropy change of the working fluid
(b) the entropy change of the source and
(c) the total entropy change for the process.
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.595m from the axis of rotation of the stool. She is given an angular velocity of 3.05rad/s , after which she pulls the dumbbells in until they ar..
in a certain thermal reactor fueled with partially enriched uranium 13 of the fission neutrons are absorbed in
A mass M=151 kg is suspended from the end of a uniform boom as shown. Calculate the tension in the horizontal cable
1 mole of an ideal gas initially at 100° C and 1 atm is expanded adiabatically against a constant pressure of 5 atm until equilibrium is re-established. Given that the temperature dependence of the heat capacity is CV = 4.50 + 0.005T calculate ?U,..
Find the average force on the driver if the deceleration is accomplished gradually by the application of brakes over a 10.6 s interval
A box with a mass of 3.5kg slides of a ramp 8 m high, then whentraveling on a horizontal surface it collides with a box with mass5kg, find the velocity of the box before the collision
Calculate the efficiency of a fossil-fuel power plant that consumes 450 metric tons of coal each hour to produce useful work at the rate of 900 MW
the medians of a right triangle that are drawn from the vertices of the acute angles have lengths of 2radic3 and
A woman holds a tube of lipstick 8 cm from a spherical mirror and notices that the image of the tube is upright and one third its normal size. find what is the position of the image
the shinkansen, the japanese train, runs at high speed. riding on the shinkansen, you notice that the frequency of a crossing signal changes markedly as you pass the crossing. what is the speed of the train
The block in the figure below has a mass of 5.7 kg and it rests on an incline of angle %u03B8. determine the angle of the incline
A communications satellite is in synchronous orbit that is2.7 107 m directly above the equator. The satellite is located midway among Quito, Equator and Belem, Brazil, two cities on the equator that are separated by a distance of 3.5 106 m.
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