Physics, 13.11.2019 00:31 Jgarciar6841
The speed of light in vacuum is exactly 299,792,458 m/s. a beam of light has a wavelength of 651 nm in vacuum. this light propagates in a liquid whose index of refraction at this wavelength is 1.16. what is the speed of this light in the liquid? give an answer in 108 m/s. pay attention to the number of significant figures.
Answers: 2
Physics, 21.06.2019 22:00, Angelo1660
Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?
Answers: 3
Physics, 22.06.2019 19:30, 27lcasselberry
Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
Answers: 1
Physics, 23.06.2019 02:30, jcastronakaya
Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum.
Answers: 1
The speed of light in vacuum is exactly 299,792,458 m/s. a beam of light has a wavelength of 651 nm...
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