Q1/GaAs is a semiconductor compound has number of electrons (n) of 1023/m³, electron charge (q) of (1.602 x10-¹9) c, electron mobility (He) of (6.2422 x10-¹1) m²/v.s at 25 c°. "9 Estimate the tempreture in (cº) that GaAs has conductivity of 3.7 x 10˚³ (Q -m)`¹ where Eg of 1.42 ev, K of 8.62 x 105 ev / k

Q1/GaAs is a semiconductor compound has number of electrons (n) of 1023/m³, electron charge (q) of (1.602 x10-¹9) c, electron mobility (He) of (6.2422 x10-¹1) m²/v.s at 25 c°. "9 Estimate the tempreture in (cº) that GaAs has conductivity of 3.7 x 10˚³ (Q -m)`¹ where Eg of 1.42 ev, K of 8.62 x 105 ev / k

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 96P: A warms transfers energy by conduction through its blubber at the rate of 150 W when immersed in ...

See similar textbooks

Similar questions

What is the physical significance of the Biot number? Is the Biot number more likely to be larger for highly conducting solids or poorly conducting ones?
At 100 degree celsius, Copper (Cu) has a lattice length of 3.655 x 10^-10 m. What is its density at the given temperature?
A walrus transfers energy by conduction through its blubber at the rate of 150 W when immersed in −1.00ºC water. The walrus’s internal core temperature is 37.0ºC , and it has a surface area of 2.00 m2 . What is the average thickness of its blubber, which has the conductivity of fattytissues without blood?
A thermocouple, with a spherical junction diameter of 0.5 mm, is used for measuring the temperature of hot air flow in a circular duct. The convection heat transfer coefficient of the air flow can be related with the diameter (D) of the spherical junction and the average air flow velocity (V) as h = 2.2(V/D)0.5, where D, h, and V are in m, W/m2?K and m/s, respectively. The properties of the thermocouple junction are k = 35 W/m?K, r = 8500 kg/m3, and cp = 320 J/kg?K. Determine the minimum air flow velocity that the thermocouple can be used, if the maximum response time of the thermocouple to register 99 percent of the initial temperature difference is 5 s.
Suppose a walrus transfers energy by conduction through its blubber at the rate of 165 W when immersed in -0.95°C water. The walrus’s internal core temperature is 37.0°C, and it has a surface area of 2.1 m2 What is the average thicness of its blubber, in centimeters, which has the conductivity of fatty tissue?
A walrus transfers energy by conduction through its blubber at the rate of 150 W when immersed in −1.00 °C water. The walrus’s internal core temperature is 37.0 °C , and it has a surface area of 2.00 m2 . What is the average thickness of its blubber, which has the conductivity of fatty tissues without blood?
Assuming the human body is primarily made of water, estimate the number of molecules in it. (Note that water has a molecular mass of 18 g/mol and there are roughly 1024 atoms in a mole)
A warms transfers energy by conduction through its blubber at the rate of 150 W when immersed in 1.00 water. The walrus's internal core temperature is 37.0 and it has a surface area of 2.00 m2. What is the average thickness of its blubber, which has the conductivity of fatty tissues without blood?
One process for decaffeinating coffee uses carbon dioxide ( M=44.0 g/mol) at a molar density of about 14,0 mol/m3 and a temperature of about 60 . (a) Is CO2 a solid, liquid, gas, or supercritical fluid under those conditions? (b) The van der Waals constants for carbon dioxide are a=0.3658 Pa m6/mol2 and b=4.286105 m3/mol. Using the van der Waals equation, estimate pressure of CO2 at that temperature and density. `
Using a numerical integration method such as Simpson's rule, find the fraction of molecules in a sample of oxygen gas at a temperature of 250 K that have speeds between 100 m/s and 150 m/s. The molar mass of oxygen (O2) is 32.0 g/mol. A precision to two significant digits is enough.
In an experiment, the temperature of a hot gas stream is to be measured by a thermocouple with a spherical junction. Due to the nature of this experiment, the response time of the thermocouple to register 99 percent of the initial temperature difference must be within 5 s. The properties of the thermocouple junction are k = 35 W/m·K, r = 8500 kg/m3, and cp = 320 J/kg·K. If the heat transfer coefficient between the thermocouple junction and the gas is 250 W/m2·K, determine the diameter of the junction.
A copper wire has a cross section of 2.5 mm^2 and a length of 2 meters. What is the electrical resistant at 20 degrees Celsius?