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Air flows steadily through a gas turbine. Air enters the turbine at 2MPa and 427 degrees C with a velocity of 20 m/s and leaves at 120kPa and 37 degrees C. The inlet and exit areas of the turbine are 0.001 and 0.008m^2 respectively. If the power output of the turbine is 140kW, determine:
1. Rate of heat loss from the turbine. (Assume constant specific heats)
An electric field given by = 6.0· - 3.9(y2 + 3.5)· pierces a Gaussian cube of edge length 3.2 m and positioned as shown in Fig. 23-56. (The magnitude is in newtons per coulomb and the position x is in meters.) What net charge (in Coulombs) is enclose..
A Carnot engine has an efficiency of 0.361, and the temperature of its cold reservoir is 406 K. (a) Determine the temperature of its hot reservoir. (b) If 5950 J of heat is rejected to the cold reservoir, what amount of heat is put into the engine..
A 5 kg fish is swimming at a speed of 1ms swallows a 1.00 kg fish swimming toward it at 4 m/s. The speed of the larger fish after lunch is what.
A flat sheet of crystalline quartz has a thickness of 1.0 cm. It is on top of a flat sheet of diamond that has a thickness of 1.2 cm. how far would it have traveled in a vacuum
Suppose that an electron trapped in a one-dimensional infinite well of width 322 pm is excited from its first excited state to the state with n = 5. What energy (in eV) must be transferred to the electron for this quantum jump
A 45.8-kg girl is standing on a 161-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. What is the velocity of the plank relative to the ice surface
A lens produces a magnification of -1.8 when an object is placed 2.5 cm from the lens. compute the focal length of the lens?
An electromagnetic wave in a vacuum has an instantaneous magnetic field strength of 0.000000735 T at a certain point. What is the instantaneous electric field strength of the wave at this point
A hollow sphere of mass 1000kg and radius 25cm is rolling down an incline plane, making a beta angle horiozntally 30degrees. calculate the moment of inertia of the hollow sphere
An electron and a positron each of mass 9.1 x 10^-31 kg, are in the same general vicinity and have very small initial speeds
A parallel plate capacitor is made of two 5cm x 5cm square plates that are separated by .012mm. The plates are charged to plus and minus 9.8nC each. What is the energy stored in the capacitor
A 42 kg child is riding on a carousel (merry-go-round) at a constant speed of 6 m/s. What is the magnitude of the change in the child's momentum |Δp with arrow| in going all the way around (360°)?
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