Acluster of galaxies has a radius of about 5.1 million light-years (4.8 × 1022 m) and an intracluster medium with a temperature of 6 × 107 k.
(a) estimate the mass of the cluster. give your answer in both kilograms and solar masses.
(b) suppose that the combined luminosity of all the stars in the cluster is 8 × 1012 lsun. what is the cluster’s mass-to-light ratio?
Answers: 1
Another question on Physics
Physics, 22.06.2019 04:30
Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?
Answers: 2
Physics, 22.06.2019 12:10
Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?
Answers: 2
Physics, 22.06.2019 16:30
In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?
Answers: 3
You know the right answer?
Acluster of galaxies has a radius of about 5.1 million light-years (4.8 × 1022 m) and an intracluste...
Questions
Mathematics, 19.04.2021 20:10
Biology, 19.04.2021 20:10
Mathematics, 19.04.2021 20:10
English, 19.04.2021 20:10
Computers and Technology, 19.04.2021 20:10
Mathematics, 19.04.2021 20:10
Mathematics, 19.04.2021 20:10
Mathematics, 19.04.2021 20:10
