Physics, 21.08.2019 16:20 goldenhawk239
In 1963, maarten schmidt of the california institute of technology found the most distant object that had ever been seen in the universe so far. called 3c273, it emitted electromagnetic radiation with a power of 2Γ1013 suns, or 100 times that of the entire milky way galaxy! schmidt called 3c273 a "quasi-stellar radio source," a name that was soon shortened to "quasar." since then, astronomers have found many quasars, some substantially more powerful and distant than 3c273. quasar 3c273 is moving away from earth at about speed 0.16c. the sun is 1.5Γ1011mfrom earth and emits energy at a rate of 3.8Γ1026j/s caused by the conversion of 4.3Γ109kg/s of mass into light and other forms of electromagnetic energy. the hubble constant is
h=70.8km/smpc=70.8103m/s3.09Γ1022m= =22.9Γ10β19sβ1
estimate the mass of 3c273 that is converted to light and other forms of radiation each minute. by comparison, the mass of earth is 6Γ1024kg.
Answers: 3
Physics, 22.06.2019 11:00
1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev
Answers: 3
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The solid that is formed and usually sinks to the bottom of a solution is the
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Physics, 23.06.2019 00:30
Discuss the difference between thermal energy and heat. (terrance) terrance, egolf, r., congdon, donald. physical science student text, 5th edition. bju press, 2014. vitalbook file.
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