Geography, 06.02.2021 01:40 josephvcarter
A star that looks bright in the night time sky might really be a very dim star that happens to be nearby; conversely, a faint star might really be a very luminous star that is extremely far away. Astronomers need to know the true brightness of stars; the true brightness tells us how much power is emitted from the surface in the form of starlight, and it can be calculated once the distance to the star is known. What process causes stars to emit light energy?
A. nuclear fusion
B. oxygen fusion
C. oxygen fusion
D. hydrogen fusion
Answers: 3
Geography, 22.06.2019 01:30
Aempty box is shaped like a rectangular prism the box has a base area of 9/10 square foot and a height of one-third foot how much packaging material is required to fill the box is it
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Geography, 23.06.2019 06:00
How does central place theory explain patterns in the size and distribution of cities?
Answers: 1
Geography, 23.06.2019 10:00
Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system
Answers: 1
Geography, 23.06.2019 16:10
Although china’s total economic output, measured by gross domestic product (gdp), is third largest in the world, it is considered a developing nation. what is most likely the most important factor for this designation? a. china’s government spends money on things that do not benefit human development. b. china has a large population, so its gdp per person is only modest. c. china has a strong economy but weak literacy and school attendance rates. d. china’s high rates of disease offset the country's economic gains.
Answers: 2
A star that looks bright in the night time sky might really be a very dim star that happens to be ne...
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