7- (6) Describe the interference pattern produced by light going throu.docx

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7. (6) Describe the interference pattern produced by light going through two slits one photon at a time as it might be recorded by photographic film. Discuss how this helps interpret the dual nature of light and how it relates to the wave function of the photon. Solution Interference is phenomenon where the rearrangement of light has been done or in other words the combination of different wave to produce resultant wave. If both the wave are in phase then it will add up and produce the bright fringe or if they are in different phase then they will cancel each other and lead to prroduce dark fringe. Initially in ray optics we have considered the light has nature of ray that means light move in straight direction but when we have seen the phenomenon of interference we come to know that light has small particle known as photon which travels in the form of wave. That means light has wave nature whcih is othe nature of light. .

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6/14/2018 1159 PM 60.2/100 Gradeboo -Print Calculator Periodic Table Question 45 of 55 Sapling Learning Map At 25 ?, how many dissociated OH ions are there in 1 267 mL of an aqueous solution whose pH is 2.08? Number ions O Previous Give Up & View Solution Check Answer Next x to search ? Solution use: pH = -log [H+] 2.08 = -log [H+] [H+] = 8.318*10^-3 M use: [OH-] = Kw/[H+] Kw is dissociation constant of water whose value is 1.0*10^-14 at 25 oC [OH-] = (1.0*10^-14)/[H+] [OH-] = (1.0*10^-14)/(8.318*10^-3) [OH-] = 1.202*10^-12 M number of mol of OH- = [OH-] * volume in L = 1.202*10^-12 M * 1.267 L = 1.523*10^-12 mol number of OH- = number of mol * Avogadroâ€™s number = 1.523*10^-12 mol * 6.022*10^23 ions/mol = 9.17*10^11 ions Answer: 9.17*10^11 ions .

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802.11 networks are identified by which of the following? A. Security identifier (SID) B. Broadcast name C. Kismet D. Service set identifier (SSID) Solution Answer: D. Service set identifier (SSID) SSID is nothing but a network name that identifies the wireless networks. It is a case sensitive and it should be a 32 alphanumeric characters unique number that can be used to pass the header of the packets that are sent over the wireless networks. Multiple SSID can also be existed. By using Multiple SSID we can connect different networks thorugh a single access point. The network manager will take care of managing different SSIDs over the multiple wireless networks. .

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8. Super Mario is attempting to high jump from a pipe on to a set of bricks at 2.44m. At the instant of takeoff, his vertical velocity is 4.0 m/s and his center of gravity is 1.25m high 4.0 m/s What is Mario\'s vertical acceleration at the instant of takeoff? a. 9.81 m/s (downward) How much time elapses after takeoff until Mario reaches his peak height? b. 0.41 s c. What peak height does Mario\'s center of gravity achieve?P Solution here, h0 = 2.44 m initial vetical velocity , v0 = 4 m/s a) the Mario\'s vertical accelration , g = 9.81 m/s^2 b) the time elapsed , t = v0 /g t = 4 /9.81 = 0.41 s c) the peak height , h = 1.25 + v0^2 /2g h = 1.25 + 4^2 /(2 * 9.81) h = 2.07 m .

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8. Multiprocessing with a single core processor is ________________. 9. The log file records every transaction that requires a ______ access to the file system? Solution 8. Multiprocessing with a single core processor is Multitasking . in single core processor when more then one processes are running together then it is called multitasking and this is accomplished by the use of cpu scheduling techniques like (first come first serve)fcfs,(shortest job first)sjf,(shortest remaining time first)srtf. 9. The log file records every transaction that requires a direct access to the file system. log file is the file used to store the log or information about each transaction which can be later used fo file system crashes or reboot or system restore etc .

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8. Identily cach of the following as a strong acid, a weak acid, a basc, a soluble ionic compound, or an insoluble ionic compound in water (a) HNO (c) CH COOH (e) ZnS (f) Fe(NO-):6H O (g) NHs (h)NaCI GNaHCO Solution (a) HNO3, Nitric acid - Strong acid (b) LiOH, Lithium hydroxide - Strong base (c) CH3COOH, Acetic acid - Weak acid (d) H2SO4, Sulphuric acid - Strong acid (e) ZnS, Zinc sulphide - Insoluble ionic compound (f) Fe(NO3)2.6H2O, Iron(II) nitrate hexahydrate - Soluble ionic compound (g) NH3, Ammonia - Weak base (h) NaCl, Sodium chloride - Soluble ionic compound (i) Fe2O3, Iron(III) oxide - Insoluble ionic compound (j) NaHCO3, Sodium bicarbonate - Soluble ionic compound (Weak base) .

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8. How will doubling the concentration of H20 in the following reaction impact the rate? CI +H20 A. Double the rate B. Halve the rate C. Quadruple the rate D. No change to the rate Solution H2O Concentration will not impact the rate because this reaction occurs in two step . First step is broken of Cl bond and second step is attack of H2O molecule.Firs t step is rate determining step. So concentration of H2O will not impact. First step is slow step. option D is correct If satisfied please rate it. Thanks Any query please comment. .

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73. On January 1, 2010, Lynn Company borrows $2,000,000 from National Bank at 11% annual interest. In addition, Lynn is required to keep a compensatory balance of $200,000 on deposit at National Bank which will earn interest at 5%. The effective interest that Lynn pays on its $2,000,000 loan is a.Â Â 10.0%. b.Â Â 11.0%. c.Â Â 11.5%. d.Â Â 11.6%. Solution Interest paid on $1.8 million = $198,000 Interest paid on $200,000 savings = $12,000 [$200,000Ã—(11%-5%)] Total interest paid = $210,000 Net funds received for utilisation = $1.8 million Effective interest rate = 11.6% [$210,000Ã·$1,800,000] Correct option is (d) .

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6. An airplane flies 450 km from Raleigh to Washington DC at 500 km/hr. It stops for a while in Washington DC and then flies 370 km to New York at 500 km/hr. If the average speed for the entire trip from Raleigh to New York is 125 km/hr how long did the plane stop in Washington DC? A 6.56 hours B 4.92 hours C 1.64 hours D 1.46 hours E 2.62 hours Solution Time required to travel From Raleigh to New York, t1 = (450 / 500) + (370 / 500) t1 = 1.64 hr When average speed is 125 km/hr, t2 = (450 + 370) / 125 t2 = 6.56 hr Let, plane stops in washington DC for time t. t = t2 - t1 t = 6.56 - 1.64 t = 4.92 hours (option B) .

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6. A 25-kg ball with a radius of 10 cm is submerged held halfway down a 1-m tall tank of water. Once released, will it float to the top or sink to the bottom? How long will it take to reach the surface/bottom? Solution volume of the sphere , V =4pi/3 * r^3 V = 4pi/3 * 0.10^3 V = 4.19 *10^-3 m^3 bouyant force , Fs = density of water * V * g Fs = 4.19 *10^-3 *1000 * 9.8 Fs = 41 N weight of the ball = 25 * 9.8 = 245 N as the weight is larger than the buyoant force the ball will sink to the bottom for the acceleration of the ball 25 * a = 245 - 41 a = 8.16 m/s^2 let the time taken is t 1/2 = 0.50 * 8.16 * t^2 t = 0.35 s the time taken to reach bottom is 0.35 s .

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1). The total number of ions present in iron (II) carbonate is ?? 2). Which compoundâ€™s name ends in -ite ? HClO MgSO3 H2SO3 1). The total number of ions present in iron (II) carbonate is ?? 2). Which compoundâ€™s name ends in -ite ? HClO MgSO3 H2SO3 2). Which compoundâ€™s name ends in -ite ? HClO MgSO3 H2SO3 Solution 1.FeCO3 ( Iron 2 carbonate) has total two ions , one Fe^+ ion and one CO3^2- ion . 2 . HClO = Hypochlorous acid MgSO3 = Magnesium sulfite . H2SO3 = Sulfurous acid . So MgSO3 ends in -ite . .

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1) Which of the following can behave as Bronsted-Lowry bases in aqueous solution? H 2 S I - Na + HNO 2 None of the Above 2) Which of the following can behave as Bronsted-Lowry bases in aqueous solution? NH 3 HClO 4 Br - HSO 3 - None of the Above Solution Ans 1 : I - According to the Bronsted lowry concept , the species that give off their protons are called as acids , and the ones that can accept it are called as bases. Since here iodide ion has -1 charge on it , it has the tendency to accept one hydrogen ions (proton) and become HI , so it behaves as bronsted lowry base. .

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1) describe the conditions neccesary for a lunar eclipse to occur, and 2) diifferentiate between the umbra and penumbra and how it influences a lunar eclipse. Solution Lunar eclipse occurs when moon comes in between sun and earth. If moon covers sun fully total lunar eclipse happen and if it covers sun partially .. partial lunar eclipse occurs . And if size of moon is smaller than sun then a bright ring will appear and annular solar eclipse will happen . 2.Now umbra and penumbra occurs when total solar eclipse happens . The darkest ring during total solar eclipse is know as umbra . And this part is the shadow of moon on earth. Now lighter part of the shadow outside of umbra is called penumbra . Both occurs at same time when total solar eclipse occurs .

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