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1. A glass camera lens with an index of refraction of 1.55 is to be coated with a cryolite film (n = 1.3) to decrease the reflections of normally incident green light of wavelength 500 nm. How thick should such a film be?
2. Suppose you wanted to use a non-reflecting layer for radar waves to make an aircraft invisible. What would the thickness of the layer be to avoid reflecting 2 cm radar waves. (You can neglect changes of wavelength in the layer for this problem.) Would there be any problems as the aircraft turn? Can you imagine any other ways to use the wave nature of radar to try to make "stealth" aircraft? How could an on-board transmitter help?
3. A Michelson interferometer is illuminated with 500 nm light. One of the mirrors is moved so that 1000 fringes move past the crosshairs of the observing telescope. How much has the mirror moved? (Note the useful YouTube video)How could you use an interferometer to tell if the wall of, say, a liquid storage tank buckles by a small amount when the tank is filled?
4. Two sources of electromagnetic radiation are in phase, and emit waves that have a wavelength of 0.44 m. Determine (and give an explanation) whether constructive or destructive interference occurs at a point whose distances from the sources are:
(A) 1.32 and 3.08 m
(B) 2.67 and 3.33 m
(C) 2.20 and 3.74 m
(D) 1.10 and 4.18 m
Glucose 6-phosphate is processed by glycolysis to lactate. How much ATP is generated from this molecule?
Cancer patients undergoing chemotherapy are normally more susceptible to infections. However, a patient receiving an antitumor drug that inhibited cell division was resistant to Salmonella. Provide a possible mechanism for the resistance.
Your report will consist of the following sections. Use the headers listed below to designate each section, except for the Title.
Humans are adapting to the enviroment by creating aids/tools; we are actually on the verge of being able to select desired traits by using genetic engineering, in-vitro fertilization, and other molecular biology tools.
Which of the microbial forms have the highest resistance to physical and chemical controls?
For this exercise you were given known phenylalanine deaminase positive and phenylalanine deaminase negative culture. what is the purpose of the uninoculated control? What other types of controls would be useful to increase reliability of the test..
What are the requirements for something to be considered living?
1) Ethnocentricity can be defined as the ________. A) scientific description of individual human societies
You suspect that Michael has sickle cell anemia and you have ordered an isoelectric focusing analysis of the child’s lysed red blood cells. (Lysing the red blood cells releases the hemoglobin.) Draw a diagram of the predicted results. Why will this t..
In addition to the main bacterial chromosomes, most bacteria also carry additional mini-chromosomes (plasmids), which carry nonessential genes or provide special functions.
Atoms can be represented by simply listing the number of protons, neutrons, and electrons-for example, 2 p+; 2 n0; 2 e- for helium. Which atom represents the 18O isotope of oxygen.
q1. many poisons function by blocking certain steps in metabolic pathways. for example cyanide blocks the last step in
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