A 1.6 GHz radio signal is detected from a galaxy as 0.86GHz. Estimate the relative velocity.
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- A distant galaxy is observed with a spectrometer. This galaxy produces an emission line that is identified as a Hydrogen transition that normally has a wavelength of 21 cm. For this galaxy, however, the emission line is observed at a wavelength of 33 cm. How fast is this galaxy moving away from us in units of km/s [round off your answer to 1 km/s]The lifetime of a muon is 2.2 μs traversing the atmosphere at 0.98c (average) (a) What is the lifetime (Dt) of this unstable relativistic elementary particle in the rest reference frame of earth? (b) What is the minimum energy uncertainty range (DE) of this unstable particle?The light from a supernova explosion is measured on a spacecraft moving towards the exploding star. Which of the following would be observed? The apparent frequency would appear to be higher than for a stationary observer. The apparent wavelength would appear to be shorter than for a stationary observer. The apparent speed of the light would be higher than for a stationary observer. a I only b II only c I and II only d I and III only
- The Juno spacecraft arrived at Jupiter on July 4, 2016. Assuming the distance between the Earth and Jupiter is approximately 6.30 × 1011 m, determine the time, in minutes, for a signal traveling at the speed of light to reach Earth from Juno.When an airplane communicates with a satellite using a frequency of 1.535 * 109Hz, the signal received bythe satellite is shifted higher by 207 Hz. (a) Is the airplane movingtoward or away from the satellite? Explain. (b) What is the component of the airplane’s velocity toward or away from the satellite?Due to the Doppler effect, a moving aircraft sees the broadcast signals at 376 MHz from a stationary communications antenna that broadcasts signals at 354 MHz. Find the relative velocity between the aircraft and the broadcast station. Determine the direction of the moving aircraft.
- (a) In communicating with an astronaut on the moon, 3.8E8 m from earth, what is the minimum time delay in getting a response to a question? (b) What would the minimum time delay be for communication with an astronaut at a distance of 4 light-years from earth?2) (A) THE PICTURE SHOWS Two SPACESHIPS MOVING: SENDS A RADIO MESSAGE To V₁ = 6.3x10 m/s. SPACESHIP # 2 AT = 72.2 MHZ. AT SPACESHIP FREQUENCY WILL SPACESHIP #2 RECEIVE THE MESSAGE ? WHAT (B) HOW DOES THE ANSWER CHANGE AFTER THEY ? PASS ONE ANOTHER 6 V₂=5.5×10 m/s A V₂ = 5.5 x 10² m/s V₁=6.3x10 m/sProcesses at the center of a nearby galaxy cause the emission of electromagnetic radiation at a frequency of 3.97×1013 Hz.Detectors on Earth measure the frequency of this radiation as 3.11×1013 Hz. How fast is the galaxy receding from Earth?
- Do it asapThe elliptical galaxy NGC 4889 is the largest galaxy in the Coma Cluster (shown in the image below taken by the Hubble Space Telescope). After analysing the spectrum of NGC 4889, an astronomer identifies a spectral line as being CaII (singly ionised Calcium) with a measured wavelength of 401.8 nm. The true, rest wavelength of this spectral line, measured in a lab, is 393.3 nm. Using a Hubble constant of ?0 = 70 km/s/Mpc, find the distance to this galaxy cluster. Give your answer in megaparsecs and in light-years.Hand written solution plz.