Chemistry, 20.04.2021 23:20 mariahrpoulin1511
By examining data from distant stars, astronomers can determine
if a star is moving away from or toward Earth. Which of the
following pieces of data would be most helpful in determining
the motion of a star?
A The star gives off blue-white light.
B
The star gives off mainly radio waves and X-rays.
C
The light spectrum given off by the star is shifted toward the
red end.
.
D
The surface temperature of the star is approximately 10,000°
Celsius.
Answers: 3
Chemistry, 21.06.2019 22:30
Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour
Answers: 1
Chemistry, 22.06.2019 08:00
Identify a strong intermolecular force of attraction between an alcohol
Answers: 1
Chemistry, 22.06.2019 18:00
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
By examining data from distant stars, astronomers can determine
if a star is moving away from or t...
History, 08.12.2020 17:20
Spanish, 08.12.2020 17:20
History, 08.12.2020 17:20
Computers and Technology, 08.12.2020 17:20
History, 08.12.2020 17:20
Mathematics, 08.12.2020 17:20
Mathematics, 08.12.2020 17:20
History, 08.12.2020 17:20
Mathematics, 08.12.2020 17:20