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- Check Your Understanding For the experiment in Example 4.2, at what angle from the center is the third maximum and what is its intensity relative to the central maximum?(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically involve integrating or extending the concepts presented thus far.) Why are the Doppler effect and diffraction not as commonly experienced with light as they are with sound?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)
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically involve integrating or extending the concepts presented thus far.) . Just before the Sun sets, a driver encounters sunlight reflecting off the side of a building. Will Polaroid sunglasses stop this glare? Why or why not?Imagine that a spacecraft has landed on Mercury and is transmitting radio signals to Earth at a wavelength of 10.000 cm. When Mercury is seen from Earth in the evening sky, at its greatest angular distance east of the Sun, it is moving toward Earth at its maximum possible relative speed of 47.9 km/s. To what wavelength must you tune your radio telescope to detect the signals? (Hint: Use the Doppler formula in Reasoning with Numbers 6-2.)Speculate as to s1at physical process might be responsible for light traveling more slowly in a medium than in a vacuum.
- acBook Pro FM radio stat1on KRTH in Urangeler pr1adiart on an assigned trequencey or I1/ MHZ a Lower Of SO,000 W. BESHImate the average Intensity ot he wave at a distance oř39.5 km) trom the radio antenna. Assume tor the Purpose or this estimate thal the antenia vadiates equally in ali directions, So that the intensity Is constant over a hemisphhere (entered on the antenna. O ESHImate the ampi1tvde of the electric Flel a at this disstance.1. Day:. Date:. in If light source dir emits light of wavelength 550nm is otropicaly lequall in all directions) with emitted power of 20 watts. Find a) Angular frequency w b) Peak amplitude of Electric field Eo at a distance of 1.5m from Source (Solve In SI Units)l AT&T LTE * 3:44 PM O 74% O 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…
- Light hes of 6o00 angular freguency J Caleulete the linear fcegueney. rad 6000 T an 5s Calculate the period. c) Caloulate te wavelongth,Daryl uses a microphone connected to an osail0scope to Studu sound waves. He Finds thar nigner Freavencies and shorter wave lengths while 10 wer PItched sounds have Iower Freavencles and 1onger wave lengths- Daryl concludes that the reiarion ship between the Freauency and the wave rength of sOund waves n air 15 the result Of Caus drion and not correlatlon. in two to three sentences, desuribe whether Daryl's conclusion is correct and explaln why not. or whyQ3/ AŁ adistance of loocm the intensity of radiation per unit area is4 0e mW/L u?. what will the inbensibybe sthe power mezer is wmoved do a distance of 200cm from the Point souyce solv by pen and paper pleas