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Your task is to design a boiler to produced saturated steam at 300 °C. Because energy costs money, you decide to use "waste" hot water streams already in the plant to feed the boiler. The two waste liquid streams available (120 kg/hr @ 60 °C and 180 kg/hr at 90 °C) are mixed and fed to the boiler; steam leaves the boiler through a 5 cm pipe.
(a) What is the boiler outlet pressure?
(b) What is the steam velocity coming out of the boiler?
(c) If electricity is roughly $0.05 per kW-hr, how much does it cost to operate the boiler per day.
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle, What is the mass of the wheel
A 8.02 -m ladder with a mass of 21.2 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 260 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular a..
The primary coil of a transformer has N1 = 250 turns, and its secondary coil has N2 = 1500 turns. what rms voltage is developed across the secondary coil
You hit a golf ball at a 61 degree angle, and it lands 120 m away, and 9 m down in a hole from it's original Y position. Find initial velocity and the maximum height
a man in a tree fort 7 m above the ground. He throws a water balloon at a speed of 3m/s at a downward angle of 17 degree below the horizontal at another man 5 m from the base of the tree fort
An %u03B1-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of1.20 106 V, What is the radius of its circular path
A spring attached to the ceiling of an elevator is 10 cm long when nothing is hanging from it. It is 12 cm long when a certain mass is hanging from it and the elevator is at rest. If the elevator moves upwards at an increasing speed of 4m/s^2, how lo..
Two large metal plates of area 1.20m2 face each other. They are 4.8cm apart and have equal but opposite charges on their inner surfaces. The strength of the electric field between them is 63N/C.what is the magnitude of the charge on each plate.
vector A and vector B have scalar product -3.00 and their vector product has magnitude 5.00. What is the angle between these two vectors
Two point charges q and 4q are at x=0 and x=L, respectively, and free to move. A third charge is placed so that the entire three-charge system is in static equilibrium. What is the magnitude of the third charge
A uniform electric field of 2000 N/C is in a direction 600 from the x-axis. A charge of -1.20 mC starts from the origin O, calculate the potential at B and at the origin
A puck of mass m = 1.20 kg slides in a circle of radius r = 18.0 cm on a frictionless table while attached to a hanging cylinder of mass M = 2.80 kg by a cord through a hole in the table
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