Physics, 30.06.2019 19:30 orlandokojoasem1234
Consider medical x rays that are taken with electromagnetic waves having a wavelength around 0.14 nm in air. what is the wave number of such waves?
Answers: 1
Physics, 22.06.2019 12:00
The sunβs mass is 2.0Γ10^ 30 kg, its radius is 7.0Γ10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5Γ10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
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What was the first instrument to ever record an earthquake?
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The largest observatory complex in the world is on mauna kea, the tallest mountain on earth. what are some factors astronomers consider when selecting an observatory site? donβt forget practical ones. should astronomers, for example, consider building an observatory on denali (mount mckinley) or mount everest?
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Consider medical x rays that are taken with electromagnetic waves having a wavelength around 0.14 nm...
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