Astronomers compared the spectra from two different stars in our galaxy. It was noted that the Doppler shift suggested that the two stars are moving relative to us with the same speed. It was also noted that the stars moved relative to us with different velocities. Explain how this can be true.
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- Why do we think that nothing, other than light, can travel faster than the speed of light?If you were traveling away from a planet at 99% the speed of light, and turned on a flash light pointing behind you (toward the planet), a person on the planet's surface would see the light moving toward them at 1% the speed of light. O True O False bpWhen astronomers look at clusters of stars, they tend to have similar Doppler shifts of their light. This would suggest that a) the stars are all moving toward us b) the stars are not moving relative to us c) the stars are all moving together d) the stars are all moving away from us
- I attempted to answer this question and I'm not sure what I am doing wrong. My formula says A.S. = 206265 (separation/distance from observer) I know to convert to the same units, so I ended up with 80 Million Km being 8 x 10 ^ -6 LY Could you please explain each step especially for the part that I got wrong for both A and B?1Which of the following best describes a frame of reference? an experiment that proved that Earth did not have an aether wind the theory that describes the behavior and characteristics of objects moving at relativistic speeds the effect of the slowing of time as an object moves with high speeds a point in which someone relates the behavior of an object from one perspective 2If an electron moves from n = 5 to n = 1, what wavelength of light is emitted? (h = 6.626 x 10-34, 1 eV = 1.6 x 10-19 J) 4008 nm 434 nm 95 nm 1281 nm 3Which of the following best describes a frame of reference? an experiment that proved that Earth did not have an aether wind the theory that describes the behavior and characteristics of objects moving at relativistic speeds the effect of the slowing of time as an object moves with high speeds a point in which someone relates the behavior of an object from…According to the tiny world experiment, there are only 5.2 intermediates between any two people on Earth (thus 6-degree of separation). This is a remark that has been made for well over half a century. The Internet may be useful in this regard. Let's pretend that everyone on Earth doubles their friend count on Facebook, Twitter, and every other social network they participate in (2x). Calculate the relative distance between us now. What do you think it is?
- At the low temperature found in some interstellar molecular clouds (around 100 K), molecular oxygen emission is strongest at a wavelength of 0.2521 cm. Determine the speed (in km/s) of a low temperature molecular cloud containing molecular oxygen if its strongest emission is at a wavelength of 0.1885 cm. Note that this cloud is moving towards us, so the answer should be negative.Greetings , I asked this on Bartleby i got a somewhat straight answer . However I was told it was wrong then I asked what makes their answer wrong and not yours(to person who said Bartleby was wrong ) . Please see photos thanks I'm also having problems with what k subscript 2 = squreroot of 2 m(mass) c^2. That's can't be speed of light it's not in the formula .Imagine that you are observing the light from a distant star that is located in a galaxy 100 million lightyears away from you. By analysis of the starlight received, you are able to tell that the image we see is of a 10- million-year-old star. You are also able to predict that the star will have a total lifetime of 50 million years, at which point it will end in a catastrophic supernova. a) How old does the star appear to be to us here on Earth now? b) How long will it be before we receive the light from the supernova event? c) Has the supernova already occurred? If so, when did it occur?
- Imagine our solar system is moving in the Milky Way toward a group of three stars. Star A is a blue star that is slightly closer to us than the other two. Star B is a red star that is farthest away from us. Star C is a yellow star that is halfway between Stars A and B. Which of these three stars, if any, will give off light that appears to be redshifted? А. А В. В O C. C D. All three stars will appear to be redshifted. E. None of these stars will appear to be redshifted.A star is 80 light years from Earth. How fast does a spacecraft have to be for the journey to last the 70 years of an astronaut's life? The answer is 0,7526c. Show a complete approach on how to get to the answer by using the necessary equations.Infrared radiation from the center of our galaxy with a wavelength of about 2 μm (2 × 10-6 m) comes mainly from cool stars. Use this wavelength as Amax and find the temperature of the stars.