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Steam enters the high-pressure turbine of a Rankine cycle power plant at 1200. psia and 700.°F and exits as a saturated vapor. It is then reheated to 600.°F before it enters the low-pressure turbine, which exhausts to a condenser at 1.00 psia.
The isentropic efficiencies of the high- and low-pressure turbines and the boiler feed pump are 88.0%, 79.0%, and 65.0%, respectively. Determine the thermal efficiency and the net power per unit mass flow rate of steam for this plant.
A tension spring used in a machine must exert an essentially static force of 135 N. It is to be wound with an initial tension of 45 N, and have a spring rate of 11.0 kN/m. Determine a satisfactory combination of D, d, N, and wire material. What is..
Deduce an expression for its period of vibration on basis of dimensions
A uniform electric field of magnitude 410N/C pointing in the positive x-direction acts on anelectron, which is initially at rest. What is the work done by the field on the electron
a golf ball rolls off a horizontal cliff with an initial speed of 13.0 ms. the ball falls a vertical distance of 13.0 m
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.70 m long conducting wire, Determine the tension in the wire
A block has an initial speed V(o) > 0 on a linear trajectory on the surface with friction coefficient u and air resistance (F = cv^2). Derive an equation that will represent the velocity (V) as a function of the position of the block (x). So V(x).
What is karma-yoga? Does this practice eliminate suffering and evil or teach indifference towards it?
A soccer ball with mass .42 kg is initially moving with speed 2.00 m/s. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.00 m/s
is the force of friction the same for different angles of incline if all other parameters are equal? explain by
The Bragg angle for a certain reflection from a powder specimen of copper is 47.75º at a temperature of 293 K and 46.60º at 1273 K. Find the coefficient of linear expansion of copper
An airplane flies south-east for 100 km, then east for 75 km. What is the total displacement using component method of addition
When the play button is pressed, a CD accelerates uniformly from rest to 480rev/min in 2.0 revolutions. what is the torque exerted on it
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