Biology, 02.10.2019 19:20 dcttechgames
Ascientist observes two stars in the night sky through a telescope. star a is white in color and relatively dim. the star’s estimated temperature is very high.
star b is red in color and extremely bright. the star’s temperature is low compared with other stars.
the scientist classify the two stars.
star a is a , and star b is a .
Answers: 2
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Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.
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Biology, 22.06.2019 09:30
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Ascientist observes two stars in the night sky through a telescope. star a is white in color and rel...
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