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Question: Repeat Problem for a nine-element array.
Problem: Find and plot the normalized array factor and determine the half-power beam width for a five-element linear array excited with equal phase and a uniform amplitude distribution. The interelement spacing is 3λ/4.
What is the acceleration of the jet in m/s2?
Tarzan spies a 35 kg chimpanzee in severe danger, so he swings to the rescue. What are the frequency and amplitude (in degrees) of Tarzan's swing
The masses of the earth and moon are 5.98x 10^24 and 7.35 x 10^22 kg respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge place..
A laser used in cutting or drilling metals produces 10 ns pulses at 1.00 J per pulse. What is the peak power of each pulse
when a signal of intensity 3.0kwm-2 is applied at the input of an amplifier of length 10m the output signal intensity
a string has a linear density of 4.80 10-3 kgm and is under a tension of 345 n. the string is 1.5 m long is fixed at
light of wavelength 6.7x10^-7m travels first through air, and then enters a medium of higher index of refraction. what is the new speed of the light wave
A 782 kg car is pushed at a constant positive velocity in a flat parking lot whose coefficient of friction is 0.18. If the car is pushed for 23 meters, what work is done by the forces acting on the object
The lowest note on a grand piano has a frequency of 27.5 . The entire string is 2.00 long and has a mass of 430 . The vibrating section of the string is 1.88 long. Part A What tension is needed to tune this string properly?
A prescription for a corrective lens calls for +1.50D. The lensmaker grinds the lens from a "blank" with n = 1.56 and a preformed convex front surface of radius of curvature of 40.0 cm. What should be the radius of curvature of the other surface?
a 500 watt heater is used to heat water in a plastic bucket. assume that 90 of the heat produced by the heater goes
Atmospheric air flows over a flat plate as shown in Fig. 4.17. Viscosity makes the air stick to the surface creating a thin boundary layer. Estimate the mass flux mm_ of the air across the surface that is 10 cm above the 120-cm wide plate if uðyÞ¼..
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