If we have an interferometer with arms of 10 meters in length and a gravitational wave of peak strain h = 10-21, what will be the peak displacement of the interferometer mirrors? What if our interferometer has 4 km arms? Show your work.
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- My answer is incorrect, please write your explanation(process detail) why the answer is PV and write why my answer is wrong. I attach the image and write my process of explanation. My solution: When the observer is moving away with a speed of vo. Using Doppler's effect for this case, f=fov-vov Then observer speed will be vo=v1-ffo putting the values vo=v1-pfofovo=v1-p Hence, the speed of the observer (moving away) is vo=v1-p. Professor's solution and answer (I attach in the image)How many more times can keck telescope 10 m in diameter gather rather than a an amateur telescope gather .25 in diameter? Hint Consider formula of area in a circleA star whose temperature is 8000 K has a peak wavelength of 362.5 nm, according to Wien's Law. If the star is in the Andromeda Galaxy, which is moving towards us at about 402,000 km/hour, what would an observer on Earth see as the peak wavelength for this star (show your work, and use c = 300,000 km/s)?
- Hi someone please help me Thanks. Only answer part DIf the orbital velocity of the Earth in its orbit is 30 km/s, then what is the maximum Doppler shift you expect to see for the Hα absorption line at 656.3 nm? Explain your answer and show all of your work.A powerful telescope can observe an object down to about the 30th magnitude in the B-band. To what distance can this kind of telescope observe a star such as the Sun? What kind of energy flux is observed at this telescope in terms of the solar constant? (Show your work for all calculations)
- Describe the SPECT and PET imaging techniques.For a human eye with a pupil diameter (aperture diameter D) of 0.005 meters, and a focal length of 0.022 meters, there will be a resolution limit due to diffraction at 0.6 microns (10^-6 meters) wavelength. If we space light-sensitive cells on the retina at this spacing, how many retina cells per meter (of retina) are there? cells/meter. Now suppose there are giants which are exactly twice the size of humans in each dimension. So giant eyes have pupils of 0.01 meters, and a focal length of 0.044 meters. How many retina cells per meter should the giants have? cells/meterPlease answer the questions in bold, thank you. What is a solar sail? and how does solar sailing work? How does a solar sail control it'd direction? How fast can it go? What is a solar sail made of, how big it has to be? What are the advantages? How expensive is it? Why do we want solar sails and where would they take us? What is the future of solar sailing and are there any existing missions? How can you relate solar sails with solar panels? How are they both like and unlike?