The potential energy of two atoms in a diatomic molecule is approximated by U (r) = a/r2 - b/r°, where r is the spacing between atoms and a and b are positive constants. %3D
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- here R jl and nl is a function of x or k ??? i m confusd advance physics questionnloclk lyimy moot Sontace is Connect w ifh a p Cons tan Co mpressed a dis tance b 3.0 cn from ;h eỖwhhbr:uv. pos:týcn what issl done by sprwy foree 3.0 Cmg & Spr→all empty stoter portially filled ---- energy f:lled Stater //// gap (a) (6) (c) s portialh T7 empty 197 (e) shoon above belog to; (d) The ener8y band digrams -n type semicondeter (5-c) - metal -p-type se - intrinnic S.c. i. Match them correctly i1. Frplain your reasoning for each, (2-3 words) be done to (b) to get diapram in (e) i.what can
- calculate The Pot ential of the p-n divider created in the re st from two 22 parches, one containing 3. donor atoms and the other Cont ain9 18 corresponding atoms at rom temperature if you knou that hi =1.9*10/m utQ. Devive the following equation of work function ef metal during themonic emission KT where = work funchion of metal %3D Boltzman Coactant Ta Temperature where m iis the mars of electam and E is Hhe Chaoge of cleckon.You are on an interstellar mission from the E arth to the 8.7 light-years distant star Sirius. Your spaceship can travel with 70% the spee d of light and has a cylindrical shape with a diameter of 6 m at the front surface and a le ngth of 25 m. You have to cross the interstel lar medium with an approximated density of 1 hydrogen atom/m3. (a) Calculate the time it takes your spaceshi p to reach Sirius. (b) Determine the mass of interstellar gas th at collides with your spaceship during the mi ssion.
- 5. Given the dispersion curve of plasma below, does plasma have normal or anomalous dispersion? @ Wo P Group velocity do dß U₂ = g Bo @ В Phase velocity В @ 1 Μοδο U = @ = Co ВL. An electron is confined in a cubical box of side 1Å. (i) Find its lowest energy (ii) what is the temperature at which the average ofthe molecule.ofa perfect gas would be equal to the lowest energy of the clectron (k =1.38×10-23 JI/K)?1. Pressure and bulk modules of an electron gas. (a) Derive a relation connecting the 3 pressure and volume of an electron gas at OK. Hint: Use the result of U == the relation between & and electron concentration. The result may be written as 200 3V 5p B = = p= 10U 3 9V of the electron gas contribution to B. NE N&F and . др (b) Show that the bulk modules B = -V. of an electron gas at OK is av . 5 (c) Estimate for potassium, using Table 1 of the textbook, the value
- 1. What is the volume of a tank that can hold 18 754 Kg of methanol whose density is 0.788g/cm³? Answer in kg/cm³ Answer in g/cm³ What is the correct significant figures i. ii. iii. 2. Choose if it's carbon, nitrogen or silicon. i. iii. iv. V. Which is the largest ionization energy? Carbon, nitrogen or Silicon? Which is the largest atomic size? Carbon, nitrogen or Silicon? Which is the least electron affinity? Carbon, nitrogen or Silicon? Which is the smallest electronegativity? Carbon, nitrogen or Silicon? Which is the most non-metallic element? Carbon, nitrogen or Silicon?: A uniform piece of n-type of silicon that is lum long senses a voltage of 1 v. Determine the velocity of the electrons. Use p1350 cm/V.sesQ2) Compute the Ap and Na for the following plasmas: (a) Space plasmas with kT=0.1 ev and n=1012m3. (b) Laboratory plasmas with kT=800 ev and n̟=1024m-³.