Science

1. Write your understanding on resonance condition for an RLC circuit. What are the reactance’s for a capacitor and an inductor in RLC circuit? 2. Determine the resonance frequency and bandwidth from the graph. Find the Q-factor also. A resonance curve for the parallel LC circuit 1 0.9 0.8 0.7 0.6 Voltage 0.5 0.4 0.3 0.2 0.1 8 0 0 4 7 10 Frequency: Bandwidth: Q-Factor: Frequency KHz KHz

EXPERT ANSWER The resonance is the condition where we get maximum value of the amplitude and in RLC circuit when the impedance is minimum at a particular frequency then we get maximum amplitude and that frequency is known as resonant frequency. Bandwidth is the difference of half part frequencies and can be obtained from the …

1. Write your understanding on resonance condition for an RLC circuit. What are the reactance’s for a capacitor and an inductor in RLC circuit? 2. Determine the resonance frequency and bandwidth from the graph. Find the Q-factor also. A resonance curve for the parallel LC circuit 1 0.9 0.8 0.7 0.6 Voltage 0.5 0.4 0.3 0.2 0.1 8 0 0 4 7 10 Frequency: Bandwidth: Q-Factor: Frequency KHz KHz Read More »

5) What is the process of gram staining? Please provide me details on what the primary stain is, mordant, decolorizer, counterstain, etc. Please explain what happens to the bacterial cell during each staining process. Please explain in detail- what a primary stain is, what a mordant does, what a decolorizer does, and what counterstain does. 6) Compare and contrast a gram positive organism vs. gram negative organisms. Please explain why gram positive cells result in a purple color after the gram staining process verses gram negative cells resulting in a pink coloration.

EXPERT ANSWER 5Answer: Gram’s staining is the test used to differentiate between gram positive and gram negative bacteria. Process of gram’s staining: 1.prepare bacterial smear on the clean glass slide 2. pass the slide through the flame for 2-3 times this process is called heat fixing 3. Apply crystal voilet (Primary stain) on smear for …

5) What is the process of gram staining? Please provide me details on what the primary stain is, mordant, decolorizer, counterstain, etc. Please explain what happens to the bacterial cell during each staining process. Please explain in detail- what a primary stain is, what a mordant does, what a decolorizer does, and what counterstain does. 6) Compare and contrast a gram positive organism vs. gram negative organisms. Please explain why gram positive cells result in a purple color after the gram staining process verses gram negative cells resulting in a pink coloration. Read More »

Halothane, C2HBrClF3, is a nonflammable, nonexplosive, and nonirritating gas that is commonly used as an inhalation anesthetic. The total pressure of a mixture of 15.0 g of halothane vapor and 24.5 g of oxygen gas is 845 mm Hg. What is the partial pressure of each gas?

Halothane, C2HBrClF3, is a nonflammable, nonexplosive, and nonirritating gas that is commonly used as an inhalation anesthetic. The total pressure of a mixture of 15.0 g of halothane vapor and 24.5 g of oxygen gas is 845 mm Hg. What is the partial pressure of each gas? Phalothane = mm Hg Poxygen = mm Hg EXPERT ANSWER No of mol of Halothane = …

Halothane, C2HBrClF3, is a nonflammable, nonexplosive, and nonirritating gas that is commonly used as an inhalation anesthetic. The total pressure of a mixture of 15.0 g of halothane vapor and 24.5 g of oxygen gas is 845 mm Hg. What is the partial pressure of each gas? Read More »

12. How can A distinguish T from C? 13. Which DNA double helix do you think would be harder to separate into two strands: DNA composed predominantly of AT base pairs, or of GC base pairs? Why? 14. What is a mutation? -In 15. The DNA double helix looks like a twisted ladder. What makes up each rung of the ladder? What holds the rungs together at the sides? -Ea 16. Is there mostly empty space between the atoms in a DNA double helix?! 17. One base pair is not in position to form normal Watson-Crick hydrogen bonds. Can you find it? (Note: Clicking on any base in D. Ends, Antiparallelism reports its letter and sequence number at the bottom of the browser window in the status line, following the word “Group”. Use this feature to obtain the letters and sequence numbers of the abnormal base pair, once you find it.) -Instructions were to not answer this question. 18. How do proteins recognize specific sequences of DNA? -Proteins recognize specific sequences of DNA by Question Set C 19. Which bases are purines? Pyrimidines?

EXPERT ANSWER 12. Nitrogenous bases are organic bases that are heterocyclic in nature and contain nitrogen. There are two types of nitrogenous bases, purines and pyrimidines. Adenine and Guanine are purines and cytosine, uracil and thymine are pyrimidines. Out of these nitrogenous bases, adenine, guanine, cytosine and thymine are found in the DNA and the …

12. How can A distinguish T from C? 13. Which DNA double helix do you think would be harder to separate into two strands: DNA composed predominantly of AT base pairs, or of GC base pairs? Why? 14. What is a mutation? -In 15. The DNA double helix looks like a twisted ladder. What makes up each rung of the ladder? What holds the rungs together at the sides? -Ea 16. Is there mostly empty space between the atoms in a DNA double helix?! 17. One base pair is not in position to form normal Watson-Crick hydrogen bonds. Can you find it? (Note: Clicking on any base in D. Ends, Antiparallelism reports its letter and sequence number at the bottom of the browser window in the status line, following the word “Group”. Use this feature to obtain the letters and sequence numbers of the abnormal base pair, once you find it.) -Instructions were to not answer this question. 18. How do proteins recognize specific sequences of DNA? -Proteins recognize specific sequences of DNA by Question Set C 19. Which bases are purines? Pyrimidines? Read More »

a) Calculate the polarization of a BaTi03 crystal (See the following Fig.). The structure transforms from cubic to tetragonal below the Curie point with lattice parameters c and conductivity to 4.06A and 3.97 A respectively. The displacement of titanium ion is opposite to that of oxygen ions. The magnitude of displacement is 0.06 A for titanium, 0.06 A for oxygen ions on the side faces and 0.08 A for oxygen ions on the top and bottom faces of the cube. The displacement of barium ions may be neglected.

Question: a) Calculate the polarization of a BaTi03 crystal (See the following Fig.). The structure transforms from cubic to tetragonal below the Curie point with lattice parameters c and conductivity to 4.06A and 3.97 A respectively. The displacement of titanium ion is opposite to that of oxygen ions. The magnitude of displacement is 0.06 A …

a) Calculate the polarization of a BaTi03 crystal (See the following Fig.). The structure transforms from cubic to tetragonal below the Curie point with lattice parameters c and conductivity to 4.06A and 3.97 A respectively. The displacement of titanium ion is opposite to that of oxygen ions. The magnitude of displacement is 0.06 A for titanium, 0.06 A for oxygen ions on the side faces and 0.08 A for oxygen ions on the top and bottom faces of the cube. The displacement of barium ions may be neglected. Read More »

1. The diffusion rate of A in B was studied at 500°C and 850°C. It was reported that, for the same diffusion time, the depths of penetration xi and x2 in the two experiments were in the ratio of 1: 4. Show that the activation energy of A in B is 57 kJ/mol. 2. An amount Q of a dopant is deposited on the surface of a silicon substrate. During a subsequent anneal without the dopant in the atmosphere the concentration c of the donant as a function of depth x and time t is given by c= (0 VDI exp(-x2/4D Show that this is solution of Fick’s second law, where D is independent of concentration. 3. The activation barrier for iump is 100 kJ/mol. Calculate the rate at which a kacancy iumps in copper at 20°C.

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