2) What is the radiation resistance of a short dipole flowing 10A over it if the maximum power density emitted to a point 1 km away from it is 60nW / m2? Üzrinden 10A akan bir kısa dipol kendisinden 1 km uzaklıktaki bir noktaya yaydığı maksimum güç yoğunluğu 60nW/m² ise ışıma direnci nedir? O 0.01ohm O 10 ohm O 0.5 ohm O 1 ohm O 0.1 ohm
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- Find the expression for the electron's resonance frequency using F=ma equation, in which the polarization is P=-neî and the depolarization field would be E = - 4лР 3 4ne? (a) o 3m 4ле? (b) o 4лпе (c) o 3m (d) o ne? 2mA perpendicular polarized plane wave with an electric field amplitude of 18 V/m and a frequency of 5 GHz propagates from free space (&1-1, 1-1, 1-0) to another medium with parameters &2 = 3, 2-1, 62-0. If the angle of incidence is 60°; determine the electric field at the interface in the second dielectric.The instantaneous electric and magnetic fields created by a point source at the origin at a Dcos ot E cos ot distance s are given by E = 2TE,r e and H where o, D, E are constant %3D Hom and the units vectors are f, 0, and ø.Calculate the averaged power radiated by the sourc (a) cDE (b) cA (c) cDE (d) AB
- (electrostatic mirror) Source Ring electrodes (+) OV region Space focus plane +V,(>V) - 2s -Deflector plate Second drift region Deflector plate Lower Second reflection_ distance `Grid (extractor) energy `Grid Grid Backplate (repeller) LGrid Higher `Mean energy energy Second drift region Detector -o V What type of mass spectrometer is depicted in the schematic? linear quadrupole ion-trap mass spectrometer time-of-flight mass spectrometer Orbitrap mass spectrometer transmission quadrupole mass spectrometerThe Hall effect is to be used to find the density of charge carriers in an unknown material. A Hall voltage 40 uV for 3-A current is observed in a 3-T magnetic field for a rectangular sample with length 2 cm, width 1.5 cm, and height 0.4 cm. Determine the density of the charge carriers.In a Hall-effect experiment, a current of 2.3 A sent lengthwise through a conductor 1.2 cm wide, 3.9 cm long, and 10 μm thick produces a transverse (across the width) Hall potential difference of 8.4 µV when a magnetic field of 1.3 T is passed perpendicularly through the thickness of the conductor. From these data, find (a) the drift speed of the charge carriers and (b) the number density of charge carriers. (a) Number M. i (b) Number i Units Units
- In the Millikan oil drop experiment tiny charged oil droplets generated by a spray are allowed to fall under gravity through a hole in a top electrode, T, towards a bottom electrode B separated from T by 1 cm. When a holding voltage Vh = +0.25V is applied between T and B the droplets are seen to be suspended motionless between the electrodes. What is the specific charge of the droplet q/m?Q6 : For static (time-independent) fields, which of the following current densities are possible? J = 2x'yax + 4x²z²ay - 6x²yz az , (2) J = x y ax + y(z + 1)ayIn the Millikan oil drop experiment tiny charged oil droplets generated by a spray are allowed to fall under gravity through a hole in a top electrode, T, towards a bottom electrode B separated from T by 1 cm. When a holding voltage Vh = +0.25V is applied between T and B the droplets are seen to be suspended motionless between the electrodes. What is the specific charge of the droplet q/m? Select one: a. 1.5 C/kg b. 0.392 C/kg c. 2.7 C/kg d. 0.16 C/kg