Physics, 26.11.2019 02:31, candiceforever123
When a star like our sun exhausts its fuel, thermonuclear reactions in its core cease, and it collapses to become a white dwarf. often the star will blow off its outer layers and lose some mass before it collapses. suppose a star with the sun’s mass and radius (the radius of the sun is 6.96×108m ) is rotating with period 25 days and then it collapses to a white dwarf with 51 % of the sun’s mass and a rotation period of 131 s. a) what is the radius of the white dwarf? b) compare your answer to the radius of the earth. c) compare your answer to the radius of the sun.
Answers: 2
Physics, 21.06.2019 20:30, milhai0627a
Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)
Answers: 2
Physics, 22.06.2019 09:30, smiley29162
Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential
Answers: 2
When a star like our sun exhausts its fuel, thermonuclear reactions in its core cease, and it collap...
Mathematics, 31.08.2020 01:01
Mathematics, 31.08.2020 01:01