Physics, 27.04.2021 14:50 viktoria1198zz
A Cepheid variable star in a spiral galaxy appears roughly 108times fainter (on average) than an identical Cepheid observed in the Milky Way Galaxy, whose distance is 1,000 parsecs. Using the inverse square law, calculate the distance to the nearby galaxy
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Physics, 22.06.2019 14:40
Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?
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Physics, 22.06.2019 16:50
Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.
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Physics, 23.06.2019 01:30
The process of a material going through a change of state from a gas to a liquid
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Physics, 23.06.2019 05:20
Derive the formula 2as=v² -u² where the formula have have usual meanings
Answers: 1
A Cepheid variable star in a spiral galaxy appears roughly 108times fainter (on average) than an ide...
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