8. Calculate the intrinsic impedance of aluminum (? = 3.816×107 S/m,
µ = µ?) and nickel (? = 1.449×107 S/m) at 200 Hz and ad 25 GHz.
Note that the relative permeability of nickel is µr = 700 at 200 Hz and
µr = 150 at 25 GHz
8. Calculate the intrinsic impedance of aluminum (? = 3.816×107 S/m, µ = µ?) and nickel...
8. Calculate the intrinsic impedance of aluminum (? = 3.816 × 107 S/m. ,1-110) and nickel (?-1.449 x 107 S/m) at 200 Hz and ad 25 GHz Note that the relative peraility of nicke is 700 at 200 and lr - 150 at 150 at 25 GHz.
A rectangular copper block is 30 cm in height
(along z). In response to a wave incident upon the block from
above, a current is induced in the block in the positive x
direction. Determine the ratio of the ac resistance of the block to
its dc resistance at 10 MHz. The relevant properties of copper are
given in Appendix B.
A30 25 30cm 20 15 10 5 30 30 20 20 10 10 Material Conductivity, σ (S/m) | Material...
A section of transmission line of 50 ohm characteristic impedance and 3x10^8 m/s propagation velocity carries simultaneously 300 MHz and 150 MHz signals. The line is terminated in a parallel connection of two sections of the same line, both sections terminated in 50 ohm resistance designated A and B. A 50 cm long open-circuited section is connected 50 cm from the connection to the driving line across the line terminated in resistance A. A 50 cm long short-circuited section (of...
A rectangular copper block is 30 cm in height
(along z). In response to a wave incident upon the block from
above, a current is induced in the block in the positive x
direction. Determine the ratio of the ac resistance of the block to
its dc resistance at 10 MHz. The relevant properties of copper are
given in Appendix B.
A30 25 30cm 20 15 10 5 30 30 20 20 10 10 Material Conductivity, σ (S/m) |...
Material
ρ (Ω•m) at 20 °C
Resistivity
σ (S/m) at 20 °C
Conductivity
Copper
1.68×10−8
5.96×107
Given the parallel plate shown below: (a) Calculate the TEM mode circuit parameters (L',C', R', and G') step-by-step and compare your derivation to the answer given in Table 2 of Ludwig. Hint: Do this calculation carefully since a problem of this nature may show up on an exam with a different geometry (b) Now calculate these parameters for a copper-plate transmission line operating at...
13. The resistivity of aluminum at 25 'C has been measured to be 2.72 x 10-8 0 m. The thermal coefficient of resistivity of aluminum at 0 C is 4.29 x 10-3 K-1. Aluminum has a valency of 3, a density of 2.70 g cm3, and an atomic mass of 27 a. Calculate the resistivity of aluminum at-40°С. (Ans: 2.03 x 103 Ω m) b. What is the thermal coefficient of resistivity at-40'C? (Ans: 5.23x 103K c. Estimate the mean...
A low-loss dielectric is one with a small loss tangent, that is, (o/we) <1. We can reduce (6.52) for this special case by applying a binomial series expansion to the value within the 6.3.1 Low-Loss Dielectrics interior square root portion of the equations. The expansion is n(n-1);- + (1 + x)" = 1 + nx + 2! and for x< 1 this can be approximated as (1 + x)" = 1+ nx So we have + 1+ (6.53) 08 Inserting...
4. Nickel has normal free energy (surface tension) of 2.69 /m2 s a normal melting point of 1455 "C, enthalpy of fusion of +17.47 kJ/m, and surface a. Calculate the critical radius of nickel (in nm) at 1000 C. (2p) 2(2(28k) (17.47 : 117 XOA b. Assunning ΔGTisnegative, whatdoes negativeAhmeanfortheformation ofstablenucles? Explain. (Ip) 5. Utilizing the lead-tin phase diagram: For a 60 wr% Sn-40 wt% Pb alloy at 150 °C: a. What phase(s) is (are present? (Ip) 2 piases Present...
is attached to a string and rotated in a vertical circle of radius 04 m with constant speed of 12 m/s. Calculate the tension of the bottom of the circle. string at the top and the (b) Moon is revolving around the earth once every 28 days. Determine its angular speed in rad/s. O If the distance between earth and the moon is 3.8 x 10 m, determine the mass of the earth. 6. A 0.2 kg ball is sliding...
please show full work for understanding purposes:)
5. (4 pts) Calculate the pH of a 0.0025 M aqueous solution of strontium hydroxide, Sr(OH). Sr(OH)2 = Srz + 20H .0025 - x + x + 2x o rood .0025 - Kb = (2x² 4 = 6.5*103 0.0025 ) pH = 6. (6 pts) Calculate the pH of a 0.175 M NH; aqueous solution. K. for NH, is 1.8 x 10. pH = 180 7. (10 pts) Determine the pH of a...