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- Help please Small angle X-ray scattering is used to determine the structure of a diblock copolymer that forms a 1D periodic lamellar structure. в A. в DA Da a. Sketch the scattering patterns to the 4th order scattering peak m when DA = Dg. %3D b. Write the peak positions |gm| and intensities Jm (to 2 significant figures - account of the proportionality constants with a term Jo)Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Question 2 This question concerns electron degeneracy pressure inside white dwarfs. a) With reference to the Fermi momentum, pF, explain what is meant by a completely degenerate electron gas. Show that the number density of electrons in such a gas is ne (p)dp= Show that the total electron number density is given by For full marks, explain all steps in your derivation. ne = = 8πр² dp h.³ 8π 3h3 pp.
- Problem 2: Neutron star A star that is too heavy to stabilize as a white dwarf can collapse further to form a neutron star (made entirely out of neutrons, supported against gravitational collapse by degeneracy pressure). Repeat the steps in Problem 3 to find a) The radius of a one-solar mass neutron star. b) The Fermi temperature.Compare the efficiency and resolution of a semiconductor detector anda scintillation detector exposed to γ rays. Why are the efficiency andresolution different?Question 2 Consider a standard auction setting with two bidders (i = 1,2). Let F₁(v) √ where v € [0, 1] the cumulative distribution which bidder 1's valuation is drawn from the corresponding density function). Let F2(v) v² where v € [0, 2] (and fi the cumulative distribution which bidder 2's valuation is drawn from (and f₂ corresponding density function). = V the = Consider Second price sealed auction. (a) Is bidding one's own valuation a weakly dominant strategy for bidder 1? Explain why why not. = (b) Is bidding one's own valuation a weakly dominant strategy for bidder 2? Explain why why not. (e) What is the expected payment of bidder 1? (d) What is the expected payment of bidder 2? Now, consider First price sealed auction. (e) Suppose each bidder has the lowest possible valuation. That is, v₁ V2 = 0. In equilibrium, b₁ (0) = b₂(0) = 0 because it would be dominated for a bidder to bid more than the value. Now suppose each bidder has the highest possible valuation. That is, = 2. In…
- B. Solve the problems correctly. Present all solutions. 3. all Upiect ct: 5? 4. The brakes of a car moving at 14 m/s are applied, and the car comes to a stop in 4s. How far does the car go, while it is slowing down from 14 to 10 m/s? 5. The brakes of a car whose initial velocity is 30 m/s are applied, and the car receives an acceleration of -2 m/s². How far will it have gone (a) when its velocity has decreased to 15 m/s and (b) when it comes to a stop? 6. A car starts from rest and accelerates 10 m/s². (a) How far will it travel after 5 seconds? (b) How far will it travel during the sixth second?Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer. and and Very very grateful!how did we find ca(t) and cb(t)? please explain in detail
- i need the answer quicklyQ1: Consider the ideal laser medium behaves as a four-level system and the population inversion between states 2 and 3. The pump excites the atoms to states 3 and 2 at a rate pumping R3 and R₂, respectively. State 4 decays back to 3 so fast. What is the pump rate in the absence of the saturating beam and no oscillation on the state 3? Assume that the degeneracies in all states are different.(b) Consider a 100 cm² photovoltaic cell with reverse saturation current density of Jo = 10-¹² A/cm². In full sun, it produces a short-circuit current of 40 mA at 20 °C. Calculate the open-circuit voltage at full sun. Consider Boltzmann's constant as kB = 1.381 x 10-23 J.K-1 1.6 x 10-1⁹ C and T(K) = 273.15+T(°C) The open-circuit voltage, Voc, for a PV is: KBT, Voc = -In(+1) q lo Isc I q=