Physics, 21.08.2019 04:10 gigglegirl5802
Why is it important that the supernovae being observed, which led to the idea of dark energy, are high z (remember z is another name for redshift) supernovae? high z supernovae are always paired with cepheid star systems, so we can calculate their distances. high z supernovae are brighter than regular supernovae. high z means that the supernovae are far enough away for us to detect changes in the expansion rate. high z supernovae have light redshifted enough to see in the visible spectrum with our telescopes.
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Physics, 21.06.2019 21:00, Kennethabrown09
Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk, in meters?
Answers: 2
Physics, 21.06.2019 21:20, janayshas84
An artificial satellite circles the earth in a circular orbit at a location where the acceleration due to gravity is 6.03 m/s^2. determine the orbital period of the satellite.
Answers: 3
Why is it important that the supernovae being observed, which led to the idea of dark energy, are hi...
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