Geography, 25.07.2019 03:30 mistiehaas
Q3.(a) what is parallax and how can we use it to determine the distance to a star? why does it take so long for such a measurement to be made? q4.(b) suppose that you want to determine the temperature, diameter, and luminosity of a star. which of these quantities require you to know the distance to the star? explain your reasonings q5.what do we mean by a star's spectral type? by a star's luminosity class? discuss what they tell us about the star and explain how we classify stars by type and class.
Answers: 2
Geography, 22.06.2019 15:00
Suggest two reasons why irrigation is important for human development of the desert
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Geography, 22.06.2019 22:00
Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false
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In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d
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Geography, 23.06.2019 09:00
What can you learn about precipitation levels in south america from this map? brazil is experiencing a drought.it rains more in higher altitudes.peru received the highest level of rain.venezuela got less than 25 cm of rain.
Answers: 2
Q3.(a) what is parallax and how can we use it to determine the distance to a star? why does it take...
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