Calculate the intrinsic concentration in silicon at (a) T = 77 K and (b) T = 300 K. (c) Determine the ratio of n, at T = 77 K to that at T = 300 K. %3D

Q: Determine and zv?> Jor Proo (r,t)

A: The wave function of the second excited state of the hydrogen atom is ψ200=132πro32-rroe-r2ro where…

Q: A heart beats 264 beats in 3 minutes. What is the unit rate?

A: Unit rate = Total number of heartbeatTotal time

Q: 987 m/s = = km/hr 4392 km/h = m/s

A:

Q: A car is moving at 35.0 mi/h. Express its speed in (a) m/s .

A: The distance an item travels in a unit of time is the definition of speed in physics. In other…

Q: A silver sphere with a radius of 5.2 cm weighs the same as a certain aluminum cube. How long are the…

A:

Q: A car is traveling at a speed of 41 m/s. a) what is its speed in kilometers per hour ? b) is it…

A: Given data:  Speed (v) = 41 m/s Required: Speed in km/h

Q: 7. A Pyramid in Egypt has a square base 230 m on each side. The faces of the pyramid make an angle…

A: Pyramid is an example for a square prism.  Variables known, The length of the square base is 230m,…

Q: How many centimetres

A:

Q: If the density of an object is 16.8 g/cm?, then what is the approximate volume (V) of 800 g of this…

A: Given value--- density = 16.8 g/cm3.  mass = 800 g. We have to find--- volume ?

Q: a certain field has a length of 516 ft. how long is the field in meters? answer only

A: Length, L = 516 ftWe have to convert length (in ft) to length (in m).

Q: * ?What is the final reading of micrometer shown in figure below 10 Made in D0

A: The above instrument is a screw gauge.  Pitch of the screw gauge =Distance moved by a screwNo.of…

Q: f (Hz) 50 100 150 (Vind) meas 11.91 22.99 34.17 ● ● slope = Lcalc Lmeas (from slope) = HoNcNsAc ls %…

A: The slope of a graph is a measure of how steeply the graph changes between two points. It is defined…

Q: Convert 21 m/s to km/hr.

A: Given data:  21 m/s Required: The value of 21 m/s in km/hr

Q: Q1 (70 P). Please look at the Figure 1 equation OT D O1 Th (c) Please find the slope at B, LADI

A: It can be proved that, EIdydx=15ωL232-ωx36-7ωL324 Where, dydx is the slope.

Q: A marathon runner averages 9.3 mi/h. How long does it take them to run a 26.14-mi marathon in hours?…

A: Required to find the time in hours

Q: |.84 ] of to units ft 1b 02

A: The following data are given: The given value = 1.84 Jg-1K-1

Q: How did it become 21.3 + (1.88)m?

A: Here we have to add all x-component and all y-component terms.

Q: Treat a cell in a human as a sphere with a radius of 1.0

A: Given, the radius of a cell assuming it to be spherical, r=1 micrometre  We need to estimate the…

Q: Given Xo = Om X= 5.30m Vo V= Om/s ( rest) ニ to = Os 七= 5、59s

A: Given : xo = 0 m x = 5.30 m v = 0 m/s to = 0s t = 5.59 s

Q: The solar power per unit area at the Earth's distance from the sun--called the "solar constant"--is…

A:

Q: The figure shows vertical parallel plates of length L=5 cm separated by 4 cm. Electrons (mass me =…

A: Given : Length of the parallel plates L=5 cm distance between plates d=4 cm=0.04 m distance from…

Q: 122 km/hr = mile/hr

A:

Q: Convert 41.4 m/s to units of km/hour.

A: Given data:  Speed (v) = 41.4 m/s Required: Speed in units of km/hr

Q: A rectangular box is h = 15 inches in high, w = 26.5 cm wide, and L = 0.15 yards long. v=

A:

Q: A silver sphere with a radius of 9.9 cm weighs the same as a certain aluminum cube. How long are the…

A:

Q: You live 3.8 miles from school. How many feet away from school do you live

A: It is known that the distance between the school and the your house is 3.8 miles.

Q: 987 m/s = km/hr 4392 km/h = = m/s

A: Given: Convert the following velocities  v1 = 987 m/s to km/hr v2 = 4392 km/hr to m/s

Q: where a = i+2j+3k and b= 2i -3j +k, -1 * calculate R=Da.b

A:

Q: 23 m/s to km/hr?

A: Given 23 m/s we have to convert into km/hr as we know 1km=1000m so 1 m=11000km 1hr=60 min=3600 sec…

Q: Problem 4.12 Calculate the potential of a uniformly polarized sphere (Ex. 4.2) directly from Eq.…

A: Potential due to uniformly charged sphere isV(r)=3ϵ0​r2R3Pcosθ​             for (r>R)  and…

Q: How many kw-hr of energy does a 40 Watt light bulb use in one hour?   B) FPL charges 10.8 cents…

A:

Q: 1. 200 kg = 2. 6um = 3. 4 Tbytes = 4. 5 Mm 5. 4 mg bytes mm kg %3D

A: We know that1 kg =103gAccording to question200kg=200103g200kg=200000g200kg=2×105g

Q: angular acceleration

A:

Q: (b) The magnitude of the resultant force acting on the bracket as shown in Figure Q1(b) is to be Fr…

A: We have three forces F1, F2 and F3 where F2=200 N, F3=260 N and resultant Fr=500 N making an angle…

Q: You have 2 positive charges, Q+ and +4Q. Ther are fixed on the axis shown on the image. They are 1.2…

A:

Q: ) if A = = 3i+4j +2K and B= -2i +6j +5k find A. В. (A.B änjö a)

A: Option b

Q: QUESTION 6 A crate is sliding on a level surface with coefficient of kinetic friction, uk, while it…

A:

Q: None

A: Step 1: Step 2: Step 3: Step 4:

Q: 4 m2 = ? ft2 4 ft2 = ? m2

A: 1 m2 = 10.763 ft2. and 1ft2 = 0.0929 m2.

Q: Says 1.62 is wrong

A:

Q: A fugitive escapes and ride on a taxi which traveled at a uniform speed of 50 Km/hr. Two hours later…

A: