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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
What is "coupling of chemical?" Provide two relevent biological example to help explain the importance of this process to living organism.
In the fruit fly Drosophila, a rudimentary wing called "vestigial" and dark body color called "ebony" are inherited at independent loci and are recessive to their dominant wild-type counterparts, full wing and gray body color. Dihybrid wild-type m..
Color in a type of squash is controlled by a single gene. The squash can be either white or yellow, with white squash (W) dominant to yellow (w). if 1/2 of the offspring are white, what are the probable genotype(s) of the parent plants?
Explain the phenomenon of drug resistance from the standpoint of microbial genetics inlcude a description of R plasmids/factors.
How can a genetic street number be placed on the surface of viruses and be used for the optimization of proteins?
How can altering ice nucleation protein production yield a bacterial strain useful to agriculture? Explain the logic and how this works.
describe the processes and stages of human embryogenesis.What factors will disrupt this normal growth and cause problems?
Explain the simmilarities and differences of aortic arches in the earthworm to the heart in the rat. what type of digestive system does the earthworm have? describe the function of crop and gizzard
Before this module evaluation you were very nervous. Consider a snack might help, you ate a big bowl of pasta and some bread a couple of hourse before you started this quiz.
why are algae important in nature? how are algae fungi and lichens related and how is this relationship defined?
the gametophyte of the moss produces: parrallel veins in the leaf would indicate that the plant isa:
q1. most antibacterial drugs disrupt or destroy prokaryotic cellular characteristics that are different from those of
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