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Explain the concept and importance of a thermodynamic cycle.
An Otto cycle operates on 1lb/s of air from 15 psia and 130 F at the beginning of
compression. The temperature at the end of combustion is 5,000 R; compression ratio is 5.5. for
hot-air standard k=1.32. find (a) T4, OR; (b)P4, psia; (c) Qr, BTU/s; (d) thermal efficiency, and (e)
work net in horsepower.
A Carnot engine operating between 527C and 27 C produces 600KW of work. Determine,
(a) Qa, KW; (b) Qr, KW; (c) ΔS during heat rejection, KW/K and (d) thermal efficiency of the cycle.
Determine the electric field and the potential at any point in space produced by a spherical
crown where the internal radius is R1 and the external one R2, with a total charge Q, for the
following cases: (a) non conducting and an uniform charge distributed throughout the volume;
and (b) metallic and on electrostatic equilibrium. Particularize the results for a solid sphere with radius R
We have an isolated spherical conductor whose radius is R1 = 4 cm, and whose
potential is 9000 V referring to ground. After, it is surrounded with a concentric spherical
conducting layer, with inner radius R2 = 8 cm and exterior one R3 =10 cm, isolated and with
null total charge. Determine charges and potentials on the inner conductor, as well as the
conducting layer, for the following cases:
a. Inner conductor and conducting layer isolated.
b. If the conducting layer is connected to ground.
Determine the electric field produced on any point in space by a very long line
(infinite) charged with a uniform density λ
Determine the frequency of the fundamental mode and the next two harmonic that can be set up on a sitar string of length 1.0 m. Take the speed of the waves of the string to be 2.8×10^3 m/s
Calculate much net Work per unit charge would it take to move a particle from a -15 V potential
to a +10 V potential? Does the path of the motion matter?
21.For the network shown in Figure below, determine the current flowing in each branch.
A ball is thrown forward vertically from the top of a cliff with a velocity of 10m/s.The height of the cliff above the ground is 45m.Calculate the time to reach the ground,the distance from the cliff of the ball on hitting the ground,the direction of the ball to the horizontal just before it hits the ground
