Module 5

A piece of silver wire has a resistance of 1 ohm. Determine the resistance of alead wire one-third the length and one-third the diameter if the resistivity of lead wire is 30 times that of silver. NOTE: Please explain where did you get the variables so I can understand them. Thank you

20. What is the purpose of the PEM in a fuel cell? a. to prevent the hydrogen protons from passing through to the oxygen and forming water b. to prevent the oxygen protons from passing through to the hydrogen and forming water c. to prevent the electrons from passing directly from the positive side of the fuel cell d. to prevent the electrons from passing directly to the positive side of the fuel cell

ANS: 5) You use a voltmeter to measure potential difference from a very long wire carries a uniform linear charge density 2. The meter reads 450V when one probe of the meter is placed 4.5 cm from the wire and the other probe is 2.5 cm farther from the wire. What is 2? a) 9 x 107 C/m b) 9 x 10 C/m c) 2.5 x 10-7 C/m d) 2.5 x 10 C/m e) none of above ANS:

answer 2 asap please

İNGİLİZCE TÜRKÇE RUSÇA Measuring the Hall coefficient allows to determine which of the following? a) temperature coefficient and thermal conductivity b) none of the above c) mobility of load carriers d) type of conductivity and concentration of charge carriers Bu bilgi faydalı mıydı? Evet Hayli

Two student measure the density of an unknown metal three times each Below the data Student1 Student2 6.34 g/cm? 7.11g/cm³ 6.31 7.19 6.30 7.12 The accepted value for the density is 7.08 g/cm2. Calculate percent error for student1 10% 11% 12% 13% 14% 15% 16% Other: Page 2 of 3 Clear form Back Next 20

How to compute the atomic packing factor for the diamond cubic structure? detailed example with solution please

1.1 Compute the mobility of the free clectrons in aluminum (AL) for wihich the density is 2.70 x 10' kg/m' and the resistivity is 3.44 x 10* Q. m Assume that AL has thrce valence clectrons per atom and an atomic weight of 26.98.

Please answer these multiple choices. I will give quikc thumps up!! Please all mcq please

Which member in each pair of liquids has the higher vapor pressure at a given temperature?(a)C2H6C4H10 (b)CH3CH2OHCH3CH2F (c)PH3NH3

İNGİLİZCE TÜRKÇE RUSÇA In a semiconductor crystal, atoms are held together as follows: Please choose one: a. gravitational forces b. covalent bonds C. interaction of valence electrons D. answers A., B. and C. 92/5000 13:30 30.04.2021

answer 2

2 points Hall coefficient of a specimen of depend silicon found to be 3.66x10 m/C. The resistivity of the specimen is 8.93×10-³2 m. Find the density of the charge carriers (in electrons/m3) and the mobility in (m/V.s). 1.8e22, 0.04 O 1.8e22, 0.05 O 1.7e22, 0.05 O 1.7e22, 0.04 3 points

STTY OF BAS Example 1.7: A specimen of copper has a resistivity (p) and a temperature coefficient of 1.6x10-6 ohm-cm at 0 C° and 1/254.5 at 20 C° respectively. Find both of them at 60 Cº. 1

Calculate the mobility of electrons (m² /V.sec) of n-type material having resistivity of 0.5 Q-m, the number of donor atoms per m is 3x1019 www 0.2467 0.4167 O 0.4267 0.4507

STIY OF B Example 1.7: A specimen of copper has a resistivity (p) and a temperature coefficient of 1.6x10-6 ohm-cm at 0 C° and 1/254.5 at 20 C° respectively. Find both of them at 60 Cº.

Which of the following cannot move?Please select one:a.Ionsb.Holesc.Free electronsd.Majority carriers Please select one:a.Ionsb.Holesc.Free electronsd.Majority carriers

01/ 1- Determine the energy expended in moving a charge of (80uC) through a potential difference of (10V)? 2- For a (1 k2) copper resistor with a temperature coefficient at (20°C) 0.00393, determine the resistance at (60°C)? 3- For a copper wire having a diameter of (1.3 mm). Determine the resistance of (75 meters) of a solid copper wire having the above diameter? Determine the Conductance (G) for this resistance ? 4- Prove that W = S P.dt ? %3D