Homework Help

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Regarding surface engineering, specifically the reflection and scattering of a semiconductor material, I have the following question in response to the problem below. On a surface with reflectance R = 0.35, a power of 5 x 10⁻⁵ W/µm² is applied. Knowing that the total power scattered by the particle is 5 x 10⁻² W, determine the optical section. What is the relationship between the optical section and the physical section of the particle? Scattering Section or Optical Section = σ sc Physical or geometric section = σ geom Scattering efficiency factor = Q sc Substrate reflectivity (R): 0.35. Incident intensity (I): 5*10E-5 w/(μm^2) Total scattered power (S or Psc): 5*10E-2…

equalto /greater than OR greater than /equal to Contextually I understand why it's (0,infinity) but > w/ dash under as 2 means aka till it and till it or infinity x≤1/2 can mean (0,1/2) or (1/2,infinity)

This doesn't makes senseIf x e (A1 n A2 n 143 n ... ) then x is not the element of at least one of the sets. This implies if x doesnt belong to intersection of 3 sets that means it doesn't blong to any set. De Morgan's LawI think this is false when C⊂B with elements of A U B If A A B = A A C, then B similar to Symmetric difference with 3 setsIn Symmetric difference why is intersection of 3 not included, also what its associative. Symmetric difference means "unique to" ? So AΔBΔC != (AΔB)ΔC Cardinal Number of set Union of 4 SetsI thinkg it should be - n(AUBUCUD) = [Sum of number of elements in sets A, B, C and D] - [Sum of number of elements of intersection of sets tak…

It breaks the rule number of elements of a powerset of Set A = 2^n . Also contradicts null set is a subset of everyset. Also some places it says ∅ is a element of every set 2^4 = 16, but my results say 39 Example for set {1,2,3,4} There can be 5 no. of sets n+1 single element = n 2 element = 10 - {1,2} {1,3} {1,4} {2,3} {2,4} {3,4} {1,∅} {2,∅} (3,∅) (4,∅) 3 elements = 10 4 elemets = 4 =>{1,2,3,4} {1,2,3,∅} {1,2,∅,4} {1,∅,3,4} {∅,2,3,4} 5 element = 5 additional the ∅

1 mol m–3 = 1000(L/m3) × molarity (mol/L) The 2nd equation seems to contradict the definetion, how is it using both cm and m in a forumal, i am having trouble understabding the conversion factor

xA and xB are mole fractions of each components - Vapour-liquid phase ? why is AI saying it's liquid phase composition ? Henry's Law : p = KH x “partial pressure of as in vapour phase (p) is proportional to ole fraction of gas (x) in solution” and is expressed as: Raoult’s Law: A=xA pA∘ pi = yi P total - this is the ratio of 2 components in vapour phase AI Solved - Given: p°A = 450 mm Hg p°B = 700 mm Hg Total vapour pressure, P = 600 mm Hg Let xA be the mole fraction of A in the liquid phase. Then xB = 1 − xA Using Raoult’s law: P = xA·p°A + xB·p°B 600 = 450xA + 700(1 − xA) 600 = 700 − 250xA xA = 0.40 Therefore: xA = 0.40 xB = 0.60 Partial vapour pressures: pA = x…

How is it flipped in 2nd step ?

How to choose the base compound ? And start counting from that ? IS there is a prioty list ?

Derive the midpoint formula for points in the xy-plane.

Derive the distance formula for points in the xy-plane.

I’ve spent the last months building a full mechanical cosmology model from scratch — a “Bubbleverse” simulation framework that evolves from simple single-bubble decay all the way to large-scale cosmic foam. The project now includes: energy-driven universe decay (Mark 1–2) multi-bubble competition and collisions (Mark 3 series) field-driven cosmology with dynamic critical density (Mark 4–6) large-scale foam structures and emergent behavior (Mark 7A–7D) machine-learning analysis of thousands of simulated universes (Mark ML) It’s not standard physics — just a conceptual model — but the full code, figures, phase maps and explanations are available here: Www.bubblever…

In hypergeometric distribution, n= population of n elements, r = sample size, n1 = elements recognized as having some defined criteria, n2 = n - n1 = remaining elements other than n1 . We seek the probability qk such that the sample size r contain exactly k recognized elements provided [math]k \geq 0, k \leq n_1 [/math] if n1 is smaller or [math] k \leq r[/math] if r is smaller. In such a case the probability [math]q_k =\frac{\binom{n_1}{k}\binom{n- n_1}{r - k}}{\binom{n}{r}} \tag {1}[/math] Now, I want to calculate n=8500, n1 =1000, r = 1000, k = 0 to 100. Inserting these values in (1), calculation of summation is very difficult. In such case, how can I use norm…

CnH2n-2d ?

5-isopropyl Iso means 1 branch of methyl on 2nd Propyl is c2h4 not 6 Sec-butyl is c with 2 other c attache and another fcitonal group attached Also iso thing Propy is c3h8 not 6 Here propyl mean C3H5

Also why there is +ve charge on II ?

Is the book self-contradictory or am I tripping. Also what is the order of preference for base substituent ?

'You have already read that the pi (π) bond is a weaker bond due to poor sideways overlapping between the two 2p orbitals." 1 pie bond is actually 2 bonds as it need 2 p orbitals

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Chloromethyl ? C3H5 what is that ? 1. Supposed to be CH3Cl which should be Chloromethyl Ethyl Propyl

What is acetate ? not methyl carboxylic acid Why is O negatively charged oxygen has 6 electrons and when bond it's got 7 if it losses 2 what is 5 but the middle part has 7 electrons oxygen has 6 electrons and when bond it's got 7 if it losses 2 what is 5 but the middle part has 7 electrons oxygen has 6 in valence free radicals has single electrons in their orbital in the valence shell, making atom unstable, reactive, shifts electron cloud Reaction is from

Is STP supposed to be 0C 20C or 25C ? I didn't understand anything What is 760 What is 273

5-isopropyl Iso means 1 branch of methyl on 2nd Propyl is c2h4 not 6 Sec-butyl is c with 2 other c attache and another fcitonal group attached Also iso thing Propy is c3h8 not 6 Here propyl mean C3H5 What is tetra What is tert Chloromethyl ? C3H5 what is that ? 1. Supposed to be CH3Cl which should be Chloromethyl Ethyl Propyl What is acetate ? not methyl carboxylic acid Why is O negatively charged oxygen has 6 electrons and when bond it's got 7 if it losses 2 what is 5 but the middle part has 7 electrons oxygen has 6 electrons and when bond it's got 7 if it losses 2 what is 5 but the middle part has 7 electrons oxygen has 6 in valence free radicals has sin…

Problem 7.1 In (i) What takes priority Electron transfer or Electronegative/Positive element ? In (i) Explain addition of Electronegative/Positive element seen as oxidation In (iii) How can Na be oxidized when hydrogen is been added to it ?