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A Carnot cycle heat engine uses steam as the working fluid and has a thermal efficiency of 20%. Heat is transferred to the working fluid at 250 degrees Celsius and during this process the working fluid changes from saturated liquid to saturated vapor. Please calculate the quality at the beginning and end of the heat-rejection process, and calculate the work per kilogram of steam.
Find out the magnitude of the force exerted by the right pillar while a 90.0 diver stands at the far end of the board.
A cylinder has an inner radius of 3.50cm and a height of 58.0cm and is filled with water. What is the volume of water that fills the cylinder
Pennies today are copper-covered zinc, What are the total positive charge and total negative charge in a solid copper penny that is electrically neutral
A 2.54 kg particle moving along the x-axis experiences the force shown, where Fmax=6.85 N, Fmin=-6.85 N, d1=1.27 m, d2=2.54 m, d3=3.81 m, and d4=5.08 m. At x=0.00 m the particle's velocity is 3.93 m/s. What is its velocity at x=2.54 m?
A certain capacitor in a circuit has a capacitive reactance of 26.9 ? when the frequency is 189 Hz. What capacitive reactance does the capacitor have at a frequency of 6210 Hz
Jamie pulls a box of 1.0 kg mass up an inclined plane by a constant force of 10 N that causes a displacement of 0.50 m. What is the work done by the normal force on the object
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.5 kg and the sign has a mass of ms = 15.9 kg. What is the net force the hinge exerts on the beam
Two point charges are fixed on the y axis: a negative point charge q1 = -28 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.31 m. A third point charge q = +8.7 µC is fixed at the origin. The net electrostatic force exerted on the char..
A steel (Young's modulus 2.0 x 1011 N/m2) wire is strung between two supports attached to a ceiling. What is the radius of the wire
A silver wire has resistivity ? = 1.88 × 10-8 ?·m and a cross-sectional area of 5.80 mm2. What is the displacement current in the wire at that time
A conducting sphere carrying a charge ‘q' has a radius ‘a'. It is inside a concentric hollow conducting sphere of inner radius ‘b' and outer radius ‘c'. What is the charge on the outer surface
An open-open organ pipe is 84.2 cm long. An open-closed pipe has a fundamental frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe
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