A He-Ne laser with wavelength 632.8 nm is fired from a great distance toward a neutron star with mass 4.5 x1030 kg and radius 12 km. What is the wavelength of light received at the neutron star's surface?
Q: The hottest ordinary star in our galaxy has a surface temperature of 53,000 K. What is the peak…
A: Using to the Wein's displacement law, λmax=2.8977×106nmKT
Q: The temperature of a blackbody is raised by 1% from 100 K to 101 K. It now gives off _____ times…
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Q: Calculate the temperature of a blackbody that peaks at a frequency of 7.5·108 MHz.
A: Given Fmax = 7.5 x 108 MHz = 7.5 x 108 x 106 Hz
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Q: Infrared observations of a star show that the star is most intense at a wavelength of 280 nm. What…
A: Write the expression for Wien’s law. λmaxT=2.898×10-3 m·KT=2.898×10-3 m·Kλmax
Q: Consider a 4.6-cm microwave photon. What is the momentum of the photon in kilogram meters per…
A: Momentum of Photon P= 1.44 × 10-32 Kg.m/s We know momentum of photon is given by Momentum of…
Q: How would you find the temperature of a star whose maximum light is emitted at a wavelength of 290…
A: According to Wein's displacement law Where = maximum light wavelength, T = Temperature, b =…
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Q: The temperature of a blackbody is 5505 o (a). What is the wavelength of the peak of the blackbody…
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Q: What is the Doppler broadening in the 21 cm line in an interstellar gas cloud (100 K) composed of…
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Q: Find the speed for a star in which this line appears at wavelength 122.5 nmnm.
A: Given wavelength = 122.5 nm Hydrogen transition wavelength = 121.6 nm Speed of light is c = 3×108…
Q: What is the wavelength of maximum intensity (in nm) and the total energy emitted (in J/s/m2) by a…
A: According to the Wien's law formula the relation between temperature and wavelength is given by,…
Q: A small radio transmitter broadcasts in a 33 mile radius. If you drive along a straight line from a…
A: Transmitter at origin City to the north at (0,40) City to the east at (45,0) Slope is…
Q: How fast must you be approaching a red traffic light with wavelength of 675nm for it to appear…
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Q: What would the wavelength of the 21 cm line be for a source moving away from the Earth at 10% the…
A: As per the Doppler effect, the observed wavelength can be found as, Here, λO, λS, v, and c…
Q: Consider hot Jupiter with a temperature of 3138 K orbiting the star Vega at what wavelength in nm…
A: given- Temperature of jupiter =3138 K
Q: If the surface Temperature of a star was about 11000.0 K instead of 7000.0 K what is the ratio of…
A: Given , temperature of the star is 11000 K instead of 7000 K How many times greater is the magnitude…
Q: A particular star has a surface temperature of 30,000K. Determine Amax, the wavelength at the peak…
A: Given: The surface temperature of the particular star is, T = 30,000 K To Find : The maximum…
Q: The galaxy NGC 4414 is moving away from us at 7.16x105 m/s. By how much will the frequency of the…
A: Given, the velocity of a galaxy is u=7.16×105m/s the central frequency of the Hydrogen line is…
Q: Using Wien's law, what is the wavelength (in nanometers) of the peak of the spectrum of a star which…
A: Solution:-Given thatSurface Temperature (Ts)=2.9×104 K
Q: A star with a mass like the Sun which will soon die is observed to be surrounded by a large amount…
A: Infrared bands are used in identifying dim, cool stars because they can slice through the stellar…
Q: Calculate the rms speed of a sodium atom in the solar atmosphere at 6000 K. (The atomic mass of…
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Q: Imagine that you are observing a star and you find the wavelength of peak emission for the star to…
A: required:)wavelength of peak emission for a new star having temperature one third of original star.
Q: collisions transfer energy
A: The year with the most auroras would be 2014, and the year with the least auroras would be 2020.
Q: The neutral sodium line in Sun's spectrum has a wavelength of 5896 Å. Find the wavelength shift of…
A: When a photon is moving away in a gravitational field it will lose energy. This will increase the…
Q: Consider a black body of surface area 20.0 cm² and temperature 5 000 K. what wavelength does it…
A: The peak wavelength of the radiation emitted by a blackbody is given by Wein's law. it states that…
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Q: If a star has a surface temperature of 20,000 K (2.00 × 104 K), at what wavelength will it radiate…
A: For calculating the wavelength emitted by a hot body consider it as a blackbody. A blackbody is an…
Q: Using Wien's Law for two black body objects with a temperature of 1000 K (fire) and 290 K…
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- Calculate minimum and maximum energies that can be associated with IR?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?Neutral hydrogens are detected with their emission lines of 21cm. What is the energy of a photon in such a line, and in which waveband would this line be observed?
- Calculate the wavelength of a photon having an energy of 5.89 x 10^11 J of energy. E = hc/λ You must show a correct numerical setup and your answer must include the correct mathematical unit./dsinė A beam of electrons is shot towards a material X with a crystalline structure. A diffraction pattern is observed corresponding to a distance d=0.15 nm. between two adjacent Bragg planes. The electrons are each sent in with a kinetic energy of 51.900000000000006 eV. Part a) Find the de Broglie wavelength in nanometres of an electron incident on the material X.The wavelength of the peak of the blackbody distribution was found to follow Wein’s Displacement Law. Calculate the peak wavelength of a bluish-white star that radiates at temperature 20000 K. a) 145 nm b) 100 nm c) 114 nm d) 155 nm
- find the temperature of the coolest star whose peak blackbody wavelength can be observed with the human eye (the exact range of visible light varies from publication to publication, so use 380nm to 750 nm).The three most prominent spectral lines of hydrogen are H-α at 656 nm, H-β at 486 nm, and H-γ 434 nm. If we observe an object with H-α at a wavelength of 700 nm, what wavelength will we observe H-β and H-γ? Is the object moving toward or away from us, and how do you know? Suppose we observe another object with H-α at 585 nm. Is this object moving toward or away from us? Is it moving slower or faster than the first object?Consider a large interferometer that uses a lazer with the wavelength of 1,073.27 nm (1073.27 x 10-9m). What is the frequency of the photons emitted by this beam in hertz?
- Remember the wave equation is v = lambda - f For electromagnetic waves traveling in a vacuum, they all travel at the speed of light c = 2.998 * 10 ^ 8 * m / s . An ultraviolet wave from the Sun traveling at the speed of light has a wavelength of 3 * 10 ^ - 8 * m . Calculate the frequency of this wave 8.85 * 10 ^ 15 * Hz; 2.33 * 10 ^ 13 * Hz; 9.99 * 10 ^ 13 * Hz; 9.99 * 10 ^ 15 * HzWe observe a star's spectral line at 510 nm which is normally at 500 nm. How fast is the star moving towards or away from us?Give the peak wavelengths, λpeak, for each of the following cases. State which portion of the electromagnetic spectrum it falls within. The red giant star Betelgeuse, with T = 3600 K. (In nm.)