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Arbitrary-length dipole. A communication system uses a dipole antenna for transmission. Calculate the power density recieved 5 km away given the following: I0 = 2 A, dipole length is d = 10 mm, λ = 1 m, propagation is in free space, and θ= 90°. State the assumptions you use in the calculation.
water jey machining jet is issued through 0.3mm dia at pressure 400mpa. density of water is 1000kgmm3. the coefficient
Two uniform solid cylinders,each rotating about its central axis,having the same mass of 1.25 kg and rotate with the same angu lar speed of 235 rad/s,but they differin radius, what is the rotational kinetic energy of the smaller cylinder of radius..
in a compton experiment an electron attains a kinetic energy of 0.1 mev when a 0.5mev x-ray strikes it. determine the
The rigid tank in the figure has a volume of 60 liters and initially contains a two-phase liquid vapor mixture of H2O at a pressure of 15 bars and a quality of 20%. As the tank contents are heated, a pressure-regulating valve keeps the pressure const..
A cylinder is internally pressurized to a pressure of 100 MPa. This cause tangential and axial stress in the outer surface of 400 and 200 MPa respectively. Make a mohr circle representing of the stress in the outer surface. What maximum shear stress ..
a power plant with a thermal efficiency of 40 is located on a river similar to fig p7.67. with a total river mass flow
a well contains methane gas occupying the upper 6000 ft of annulus. the mean gas temperature is 170of and the surface
Knowing that the coefficient of restitution is 0.8 between B and C, and 0.5 between A and B, Determine the velocity of each car after all collisions have taken place.
Determine the force in hydraulic cylinder AB for the position shown if the tree weighs 6000 lb. Determine the required pressure on the 4.72-in. diameter piston of the cylinder.
The uniform rectangular plate is released from rest in the position shown. Determine the maximum angular velocity during the ensuing motion. Friction at the pivot is negligible.
a car engine produces 136 hp on the output shaft with a thermal efficiency of 30. the fuel it burns gives 35000 kjkg as
a wire of radius r length l and initial temperature ti is cooled by a fluid of temperature tf at time t0. the heat
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