The Sun is currently about 4.7 billion years old. How much longer does it have before it runs out of Hydrogen? Answer in billions of years.
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The Sun is currently about 4.7 billion years old. How much longer does it have before it runs out of Hydrogen? Answer in billions of years.
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- what is the scientific concept used in the test? how old is the rock in years? scientist agree that the age of the universe is about 4 billion years old, does the age of the rock referred in the problem support that? why?At the centers of some stars, oxygen-17 can undergo a fusion reaction with a proton (a hydrogen-1 nucleus) to produce two different nuclei. One of the products is an alpha particle (a helium-4 nucleus). What is the other? Write down the reaction equation for this transformation.If the temperature at the centre of the sun is 15,000,000 K and the temperature of the photosphere is 5,800 K, what is the ratio of the temperature at the centre of the Sun compared to the photosphere? Express your final answer in the fully factorised form x : 1, where x is a number that you should determine to an appropriate number of significant figures and write it using scientific notation.
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