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Repeat the calculation in Problem 4.5 for an element to corner spacing of λ.
Problem 4.5
Consider a 90° corner reflector antenna with a half-wave dipole as the driving element and an element to corner spacing of λ/2. Calculate the directivity.
the positron is a particle with the same mass as an electron but charge e. a positron in a bubble chamber moves
For a procedure, the enthalpy change and the entropy change of the system is 173000 J and its entropy change is 210 J/K. compute the free energy change of the system at 298 K.
a particle with a charge of q -5.50nc is moving in a uniform magnetic field of b? -1.25t k.the magnetic force on the
a metal sphere of radius 19 cm has a net charge of 6.0 10-8 c.a what is the electric field at the spheres surface?b if
The compound gear to the right is located inside a truck, whose engine rotates the driving gear with a torque of 816 N·m. find the moments of inertia of both the large and small gears
A thin, uniformly charged spherical shell has a potential of 544 Volt on its surface. Estimate the electric potential inside the sphere at a radius of 3.0 cm
a popular method of distributing music used to be on disks that had a radius of about 0.3m and spun at a constant angular velocity of about pi radians per second. Find the tangential velocity at the inner and outer edges
A machine in the factory operates from 12 V. To operate from a 240 V line, What would the voltage output be if the transformer were connected backward
Light bends when it passes obliquely from one medium to another, taking somewhat a longer path form one point to another. What does this longer path have to do with the time of travel of light
A 330g air track cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. a 255-g mass hangs from the other end of a string and is released. Write Newton’s s..
in an ionic solution 5.8 x 1015 positive ions with charge 2e pass to the right each second while 6.3 x 1015 negative
Consider a cylindrical segment of a blood vessel 3.50cm long and 2.40mm in diameter. What additional outward force would such a vessel need to withstand in the person's feet compared to a similar vessel in her head?
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