Physics, 19.02.2021 22:20 annemcnair217
What phenomenon was discovered by early astronomers and used by Hubble to confirm that the universe is expanding?
A. The light emitted by the galaxies becomes brighter as they move away from one another
.B. The light emitted by the galaxies becomes whiter as they move away from one another.
C. The wavelength of the light emitted by the galaxies shifts to the blue region of the spectrum as the galaxies move away from one another.
D. The wavelength of the light emitted by the galaxies shifts to the red region of the spectrum as the galaxies move away from one another.
Answers: 2
Physics, 22.06.2019 06:20
Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question
Answers: 1
Physics, 22.06.2019 08:30
Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big
Answers: 1
Physics, 22.06.2019 12:00
If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?
Answers: 1
Physics, 22.06.2019 17:40
You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.
Answers: 1
What phenomenon was discovered by early astronomers and used by Hubble to confirm that the universe...
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