Costume jewelry beads are made of glass with index of refraction 1.5. To make them more reflective, they are coated with a layer of material with index of refraction 1.9. What is the minimum coating thickness needed to ensure that light of wavelength 540 nm and perpendicular incidence will be reflected with maximum constructive interference

Read this excerpt from a room of one's own by virginia woolf: nick greene, i thought, remembering the story i had madeabout shakespeare's sister, said that a woman acting puthim in mind of a dog dancing. johnson repeated thephrase two hundred years later of women preaching. andhere, i said, opening a book about music, we have the verywords used again in this year of grace, 1928, of womenwho try to write music. 'of mlle. germaine tailleferre onecan only repeat dr johnson's dictum. "sir, a woman'scomposing is like a dog's walking on his hind legs. it is notdone well, but you are surprised to find it done at all."which sentence best states the idea that this excerpt to develop? a. women have faced negative attitudes in some areas, but otherareas have always been open to them. b. women have always faced negative attitudes in jobs that weretraditionally dominated by men. c. women had faced negative attitudes in shakespeare's time, but inwoolf's time, these attitudes had improved.,d. women have always faced negative attitudes in music andpainting but not in literature or acting.