Astronomers observe the chromosphere of the sun with a filter that passes the red hydrogen spectral line of wavelength 656.3 nm, called the hα line. the filter consists of a transparent dielectric of thickness d held between two partially aluminized glass plates. the filter is held at a constant temperature. (a) find the minimum value of d that produces maximum transmission of perpendicular hα light if the dielectric has an index of refraction of 1.399. (assume that the glass's refractive index exceeds 1.399.) (b) if the temperature of the filter increases above the normal value, increases its thickness, what happens to the transmitted wavelength? (its index of refraction does not change significantly.) it increases. it decreases. it remains unchanged. (c) the dielectric will also pass what near-visible wavelength? one of the glass plates is colored red to absorb this light.
Answers: 3
Physics, 21.06.2019 17:10, emmafrye1
Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s
Answers: 1
Physics, 21.06.2019 19:50, Jbutler15
How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.
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Physics, 22.06.2019 21:20, payshencec21
People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)
Answers: 3
Physics, 23.06.2019 01:30, haileysolis5
The flow of electrons from one atom to another is called
Answers: 1
Astronomers observe the chromosphere of the sun with a filter that passes the red hydrogen spectral...
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