Typewritten please 1. What can you observe from the picture below? Explain in detail.Penetrates Earth'sAtmosphere?Radiation Type RadioWavelength (m) 10³Approximate Scaleof WavelengthFrequency (Hz)Temperature ofobjects at whichthis radiation is themost intensewavelength emittedY104GRNwwwwwwwVisible0.5x10-6Microwave10-²108Infrared10-5Buildings Humans Butterflies Needle Point Protozoans Molecules Atoms1K-272 °C10¹2100 K-173 °C10¹510,000 K9,727 °CNUltraviolet X-ray10-810-10101610¹810,000,000 K-10,000,000 °CGamma ray10-12Atomic Nuclei1020

I have observed that, gamma rays have smallest wavelength and have higher temperatures and on the…

1. What can you observe from the picture below? Explain in detail. Penetrates Earth's Atmosphere? Radiation Type Radio Wavelength (m) 10³ Approximate Scale of Wavelength Frequency (Hz) Temperature of objects at which this radiation is the most intense wavelength emitted Y 104 N Microwave 10-² 108 wwwwwww Infrared Visible 10-5 0.5x10-6 Buildings Humans Butterflies Needle Point Protozoans Molecules Atoms Atomic Nuclei 1K -272 °C 10¹2 100 K -173 °C 10¹5 N 10,000 K 9,727 °C Ultraviolet X-ray 10-8 10-10 1016 10¹8 Gamma ray 10-12 10,000,000 K -10,000,000 °C 102⁰

1. What can you observe from the picture below? Explain in detail. Penetrates Earth's Atmosphere? Radiation Type Radio Wavelength (m) 10³ Approximate Scale of Wavelength Frequency (Hz) Temperature of objects at which this radiation is the most intense wavelength emitted Y 104 N Microwave 10-² 108 wwwwwww Infrared Visible 10-5 0.5x10-6 Buildings Humans Butterflies Needle Point Protozoans Molecules Atoms Atomic Nuclei 1K -272 °C 10¹2 100 K -173 °C 10¹5 N 10,000 K 9,727 °C Ultraviolet X-ray 10-8 10-10 1016 10¹8 Gamma ray 10-12 10,000,000 K -10,000,000 °C 102⁰

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter34: Frontiers Of Physics

Section: Chapter Questions

Problem 24CQ: What is critical temperature Tc? Do all materials have a critical temperature? Explain why or why...

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What is critical temperature Tc? Do all materials have a critical temperature? Explain why or why not.
6. What is the temperature of an object if the peak wavelength of its blackbody spectrum is 1200 micrometers? a. 2.4 K b. 25 K С. 322 К d. 833 K e. None of these CS Scanned with CamScanner
What is critical temperature Tc ? Do all materials have a critical temperature? Explain why or why not.
2. The wavelength of maximum intensity of the sun's radiation is observed to be near 500 nm. Assume the sun to be a black-body and calculate,imsed of (a) the sun's surface temperature (b) the power per unit area (intensity) emitted from he sun's surface. (c) At what rate is the sun losing mass in units of kg/s? (Hint: What are the units from rignslavaw wert odrai Jari W (d) your answer in part (b)?) (d) At that rate, how much time would it take to exhaust the sun's fuel supply? Does your answer seem reasonable? (The sun's mass is ~2.0x1030 kg)
1. The temperature of stars in the universe varies with the type of star and the age of the star among other things. By looking at the shape of the spectrum of light emitted by a star, we can tell something about its average surface temperature. a. If we observe a star's spectrum and find that the peak power density occurs at the border between red and infrared light, what is the approximate surface temperature of the star? (Remember to include units)Incorrectb. If we observe a star’s spectrum and find that the peak power density occurs at the border between blue and ultraviolet light, what is the surface temperature of the star? (Remember to include units)Incorrect Submit QuestionQuestion 1
2. Plasma oscillations in the ionosphere. The plasma density in the lower ionosphere has been measured during satellite reentry to be about a) 10¹8 m-³ at 50 km altitude, b) 10¹7 m-³ at 70 km and c) 10¹4 m²³ at 85 km. Use the formula for the electron plasma frequency to compute its numerical value for each of these three altitudes, AND state (we'll address this quantitatively later, when we get to EM wave propagation in plasmas) why the ionosphere is a relevant consideration for radio communications both on earth and between earth and interplanetary spacecraft.
Why don’t we see hydrogen Balmer lines in the spectra of stars with temperatures of 45,000 K? a. There is no hydrogen in stars this hot. b. The stars are hot enough that most of the hydrogen is ionized and the atoms cannot absorb energy. c. These stars are so cool that nearly all of the electrons in the hydrogen atom are in the ground state. d. Stars of this temperature are too cool to produce an absorption spectrum. e. Stars of this temperature are too hot to produce an absorption spectrum.
CamScanner 09-09-2021 14.46 2 26. Why will an infrared photon have less energy than an ultraviolet photon? 27. Why will the photon of red light have less penetration ability than a gamma ray photon? 28. 28.1 Calculate the energy of a photon (elec tromagnetic radiation) with frequency 3x 10 Hz. 28.2 Calculate the energy of a photon light with frequency 12 THz. 29. 29.1 Calculate the energy of a photon with: a wavelength of 660 nm. 29.2 Calculate the energy of a photon e light with a wavelength of 532 nm. 30. 30.1 Calculate the wavelength of a photon with energy 3,3 x 1019 J. 30.1 Calculate the wavelength of a phol with energy 5,4 x 1018 J. 31, 31.1 Calculate the frequency of a photon with energy 1,33 x 10-f7 J. 31.1 Calculate the frequency of a photor with energy 9,93 x 1010 J. 18:18 1/1 O
6. Firefly bioluminescence has a peak wavelength of around 600nm. From Wien’s blackbody radiation displacement law calculate the temperature if this were a blackbody spectrum. Could this be a blackbody spectrum and why or why not?
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1. What is the energy of a photon of yellow light (A = 550 nm)? How big is this in comparison to the energy released every second by a standard 60W light bulb? How does this explain why we don't detect the quantization of light in the everyday world?
1. The temperature of stars in the universe varies with the type of star and the age of the star among other things. By looking at the shape of the spectrum of light emitted by a star, we can tell something about its average surface temperature. a. If we observe a star's spectrum and find that the peak power density occurs at the border between red and infrared light, what is the approximate surface temperature of the star? (Remember to include units)b. If we observe a star’s spectrum and find that the peak power density occurs at the border between blue and ultraviolet light, what is the surface temperature of the star? (Remember to include units) Submit QuestionQuestion 1