Physics, 21.01.2021 22:20 trejo282961
5. The Doppler effect applies to light waves as well as sound waves. Astronomers use this to measure the motion of stars and galaxies. In 1929, Edwin Hubble
discovered that light from distant galaxies was shifted away from the blue end of the spectrum and towards the red end of the spectrum Red light has a longer
wavelength (and a lower frequency than blue light. What could Hubble conclude about these galaxies?
O A The distant galaxies are growing smaller
OB. The distant galaxies are growing larger
OC. The distant galaxies are moving towards the Earth
D. The distant galaxies are moving away from the Earth
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Physics, 22.06.2019 22:30
Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.
Answers: 1
Physics, 22.06.2019 23:10
An ascending elevator, hanging from a cable, is coming to a stop. part a part complete identify all forces acting on the elevator from the list below. select all that apply. select all that apply. kinetic friction normal force tension weight static friction submitprevious answers correct part b draw a free-body diagram of the object. draw the vectors starting at the black dot. the location and orientation of the vectors will be graded. the exact length of your vectors will not be graded but the relative length of one to the other will be graded.
Answers: 3
Physics, 23.06.2019 08:00
Acar going 30 m/s to 70 m/s in 10 seconds calculate the acceleration of the car
Answers: 2
5. The Doppler effect applies to light waves as well as sound waves. Astronomers use this to measure...
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