Physics, 24.12.2019 03:31 alsafy5124
Astronauts visiting a new planet find a lake filled with an unknown liquid. they have with them a plastic cube, 8.0 cm on each side, with a density of 840 kg/m3. first they weigh the cube with a spring scale, measuring a weight of 25 n. then they float the cube in the lake and find that two-thirds of the cube is submerged. at what depth in the lake will the pressure be twice the atmospheric pressure of 85 kpa?
Answers: 2
Physics, 22.06.2019 11:30, alexandroperez13
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 1.90
Answers: 1
Physics, 22.06.2019 19:00, arianaaldaz062002
According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?
Answers: 3
Astronauts visiting a new planet find a lake filled with an unknown liquid. they have with them a pl...
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