The 305-m-diameter Arecibo radio telescope pictured in Figure 4.20 detects radio waves with a 4.00-cm average wavelength. (a) What is the angle between two just-resolvable point sources for this telescope? (b) How close together could these point sources be at the 2 million light-year distance of the Andromeda Galaxy? Figure 4.20 A 305-m-diameter paraboloid at Arecibo in Puerto Rico is lined with reflective material, making it into a radio telescope. It is the largest curved focusing dish in the world. Although D for Arecibo is much larger than for the Hubble Telescope, it detects radiation of a much longer wavelength and its diffraction limit is significantly poorer than Hubble’s. The Arecibo telescope is still very useful, because important information is carried by radio waves that is not carried by visible light. (credit: Jeff Hitchcock)
The 305-m-diameter Arecibo radio telescope pictured in Figure 4.20 detects radio waves with a 4.00-cm average wavelength. (a) What is the angle between two just-resolvable point sources for this telescope? (b) How close together could these point sources be at the 2 million light-year distance of the Andromeda Galaxy? Figure 4.20 A 305-m-diameter paraboloid at Arecibo in Puerto Rico is lined with reflective material, making it into a radio telescope. It is the largest curved focusing dish in the world. Although D for Arecibo is much larger than for the Hubble Telescope, it detects radiation of a much longer wavelength and its diffraction limit is significantly poorer than Hubble’s. The Arecibo telescope is still very useful, because important information is carried by radio waves that is not carried by visible light. (credit: Jeff Hitchcock)
The 305-m-diameter Arecibo radio telescope pictured in Figure 4.20 detects radio waves with a 4.00-cm average wavelength. (a) What is the angle between two just-resolvable point sources for this telescope? (b) How close together could these point sources be at the 2 million light-year distance of the Andromeda Galaxy?
Figure 4.20 A 305-m-diameter paraboloid at Arecibo in Puerto Rico is lined with reflective material, making it into a radio telescope. It is the largest curved focusing dish in the world. Although D for Arecibo is much larger than for the Hubble Telescope, it detects radiation of a much longer wavelength and its diffraction limit is significantly poorer than Hubble’s. The Arecibo telescope is still very useful, because important information is carried by radio waves that is not carried by visible light. (credit: Jeff Hitchcock)
The diameter of the Arecibo radio telescope is 307 m. It can image radio source that emit
electromagnetic waves with wavelength between 3 cm and 1 m.
The Virgo Cluster is a cluster of galaxies whose center is ~53.8 Mly away from us. Assume the
telescope is imaging at a wavelength of 63.3 cm and can just resolve two point sources of radio
waves in the Virgo cluster. How close together could these point sources be, i.e. what is the minim
distance between them in ly?
Enter an integer.
The 300 m diameter Arecibo radio telescope is observing the Andromeda galaxy at a wavelength of 14 cm.
Part (a) What is the angle between two just-resolvable stars for this telescope in radians?
Part (b) How close together could these point sources be at the 2.5 million light year distance of the Andromeda galaxy in ly?
l AT&T LTE *
3:44 PM
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Done
1 of 4
25m/s, what is the wavelength?
A=25 m/s/5H2
iytii Uf 10 Tmeters. What is the
10 paadsanPM R Dun-
!!
wavespeed?
V=f.X=50H2-10m: 500mls
wavekngth=Sm
3. A wave has a wavelength of 10 meters and a
wavespeed of 340m/s, what is the frequency of the
340m/s:10:34m/s"
4. A wave with the frequency of 13hz and a wavelength
of 4 meters. At what speed will the wave travel?
13h2.4m=52m/s²
wave?
5. A wave is moving 65 m/s, if the wavelength is 1.5
meters what is the frequency of the wave?
65m/3÷1.5:43.33 Hz
7. A wave with the frequency of 500 Hz is traveling at
a speed of 100 meters. What is the wavelength?
6. A wave has a frequency of 46 Hz and a wavelength
of 2.3 meters. What is the speed of the wave?
8. A wave has a wavelength of 125meters and is
moving at speed of 20m/s, what is it's frequency?
9. A wave has a wavelength of 80 meters and has a
frequency of 60Hz, what is it's velocity?
10. A wave has a velocity of 45m/s and a wavelength of
Smeters. What is…
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