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A solar concentrating heat exchanger system directs sunlight onto a long straight pipe. The pipe receives heat from sunlight at the rate of 153.616 Btu/hr per foot of length. Water enters the pipe at 50 lbm/hr as saturated liquid at 300 degrees F, and is heated isothermally; it leaves as superheated vapor at 20.0 psia. Assume steady state, steady flow conditions. Please show your work.
a) Determine the length of the pipe needed to achieve the desired conditions
b) Determine the rate of entropy production in this solar concentrator.
c) Show whether this system violates the second law of thermodynamic
Find the intensity of the starlight at the Earth, Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year
Explain how much work does the gravitational force do on the block as the block travels from point P to (a) point Q and (b) the top of the loop?
a satellite orbits the earth a distance of 1.50x10^7m above the planet's surface and takes 4.89 hours for each revolution about the earth. what is the acceleration of this satellite
A wheelchair athlete is training on a stationary ergometer. Her wheel's angular velocity is 3 rev/s and diameter is 80.0 cm. What is the linear velocity at the wheel's circumference
A wire coil is connected to a DC power supply of 12.0 volts. The current in the coil is measured to be 375 mA. What is the resistance of the wire coil
The acceleration of gravity is 9.81 m/s2 . Assuming that air resistance is simply a constant 93 N force on the person during the fall, evaluate the person’s velocity just before hitting the net.
Angular acceleration and angular displacement of the rotor using the equation of motion in rotational dynamics.
Suppose I have two infinite wires, one on the y axis and one on the x axis, each charged uniformly with lamda C/m. Find an expression for the electric field E at any point in the x and y plane as a function of x and y.
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 39.2m/s2. Find the maximum height ymax reached by the rocket
What is the beat frequency in Hz. A force of magnitude P pushes the block forward and downward as shown in the figure below. suppose the force is applied at an angle of 24.0° below the horizontal.
a charged plate holds 3nC of charge equally distributed on the plates surface area. find the constant electric field near the surface of this plate
Kim has a far point of 29 cm. If she wants to use glasses of power -3.99 D to correct her vision. How far from her eyes should the glasses be put
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