What is the color of the stars shown on the diagram that have the lowest surface temperature? O red O yellow O blue O white

Q: During a nuclear explosion, the core of the explosion reaches temperatures of about 10,000,000 K.…

A: We know that  wiens law   λmax = b / T b = 2.897×10−3 m⋅K T = Absolute temp in  K λmax = peak wave…

Q: You move your outdoor plant (where it is growing with full sun conditions - receiving all…

A: The rate of photosynthesis is defined as the measure of the rate at which radiant energy is being…

Q: Two stars of the same diameter or observed to have surface temperatures of 4000 Kelvin and 16,000…

A:

Q: Which part of the flame is the hottest? A) Blue Zone B) Luminous Zone C) Dark Zone D) Non - Luminous…

A: Blue zone of the flame is hottest because of the complete combustion and have most amount of oxygen…

Q: The spectrum of a typical star shows absorption lines at different wavelengths than their laboratory…

A: The given problem depends upon the Doppler Effect of light. Blue Shift: The displacement of the…

Q: Excited (ionized) clouds of hydrogen gas emit the visible Balmer wavelengths, which blend to produce…

A: In this problem, it is asking about the color.

Q: Find the speed for a star in which this line appears at wavelength 121.8 nmnm. Express your answer…

A: Given that-- (lemda)star = 121.8 nm (lemda) = 121.6 nm Speed of light (c) = 3 × 108 m/s Question?…

Q: 7. Solve for the distance to Alpha Centauri in light years if the measured parallax shift is 0.749…

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Q: What is the surface temperature of a star that emits light with a wavelength of 400 nanometers?

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Q: Rank the blocks according to the speed light travels in each, from fastest to slowest.

A: The refractive index of a medium is calculated by using the formula n=cv , where c=3×108 m/s is the…

Q: A bright blue star is moving away from Earth. Which of the choices best completes the following…

A: A bright blue star is moving away from Earth. Answer option A Absorption ,Red shifted

Q: Brightness of a Star The luminosity of a star is L = 2.5 x 106 W, and its distance from the earth is…

A: The relationship between brightness, B, luminosity, L, and distance, d, is given as, B=L4πd2

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 temperature of a star emitting light with a peak wavelength of  7,080 angstroms?  T=…

A: Given : λmax = 7080 angstroms = 7080*10-10 m. From Wien's law the temperature of star is  T =…

Q: A star is an example of a true blackbody.   True  False

A: We have to identify if the given statement 'A star is an example of a true blackbody' is true or…

Q: An aurora borealis (similar to the northern lights) takes place in the upper atmosphere of the polar…

A: Gases 2 and 3 are present in this aurora.

Q: Two stars have the exact same luminosity, but star Y is four times dimmer looking that star X. This…

A: Basic Details Two stars star X and star Y have same luminosity. The brightness of the star is…

Q: Explain the characteristics of Luminosity and the wavelength spectrum of the stars in the following…

A: Stars still more luminous than giants are referred to as supergiant and hyper giants. A hot,…

Q: A group of four stars, all the same size, have the four different surface temperatures given below.…

A: Temperature of star

Q: Which star is brighter as seen from the Earth? (you only have one try for this problem) A) A star…

A: Answer :- The dog star or sirius A  is the brightest star in Earth's night sky.  (A) The magnitude…

Q: What measurements would you make (assuming you have the money, time, & equipment) to determine a…

A: In this question we have to answer what measurements we will make to determine the surface…

Q: Which star is at higher temperature, a red star or a blue star?

A: The temperature of blue star is 40000 Kelvin degrees.

Q: A star has a surface area of 6.92x1018 m2. How much power does it radiate if it has a surface…

A: (given)   Surface area (A) of star = 6.92 x 1018 m2 Surface temperature (T) = 6,017 K σ is the…

Q: Stars A and B both have the same spectral class. Star A is 7 times farther away than star B. The…

A: Consider the brightness of the stars A and B be FA and FB, respectively, these luminosities be LA…

Q: If light from one star is 1,600 times brighter (has 1,600 times more flux) than light from another…

A:

Q: A bright red star is moving towards Earth. Which of the choices best completes the following…

A: Answer : - option D is correct. Explanation It is absorption because it is continuous spectrum,…

Q: at is the wavelength corressponding to the most intense light emitted by a giant star od surface…

A: Given values:- Temperature,(T)=5000 K ----(1) Constant of proportionality,(b)=2.90 x 10-3 m-K…

Q: 18. A star has its surface temperature of around 10000 K. Find the wavelength of the most intense…

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Q: Why is the sun the only star that can be seen during the daytime?

A: Sun is having that much of heat which have the capacity to hide all the star which can be seen in…

Q: If a star gives off light at a peak wavelength of 6.80x10-7 m. What would be the temperature of this…

A: Given peak wavelength = 6.8×10-7m

Q: The coolest stars are usually blue in color O True O False

A: Given statement : " the coolest stars are blue in colour"

Q: Can you now explain why blue stars hotter than the red stars?

A: 5) "Wien's displacement law states that the peak wavelength of the spectrum of light radiated by a…

Q: 1. Spectral signatures can be described using luminosity values in different spectral regions. UV…

A: Yes, it is possible to separate the different categories based on the values in given table because…

Q: CAN YOU LABEL THE RAY DIAGRAM

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Q: What is the rate of thermal radiation Emitted from a star with a radius of 2.310 x 10⁹m and a…

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Q: What is the significance of the color of a star? O The color tells how far away the star is O The…

A: Color of star:-

Q: The spectral type of a star is directly related to its color. Recall that a star emits light as a…

A: Correct answer is TEMPERATURE Or by Weins law we can say that λT=constant So our parameter is depend…

Q: An astronomer observes several stars with different colors. Rank them in order from highest…

A: Temperature is related to color of a star and follows colors of rainbow. Blue stars are the hottest…

Q: Find the speed for a star in which this line appears at wavelength 120.5 nmnm. Express your answer…

A: Given: Wavelength λ = 120.5 nm or 1.205×10-7 m To determine: speed of a star Formula used: v=λc here…

Q: As shown two stars in the constellation Orion. Betelgeuse appears to glow red, whereas Rigel looks…

A: Betelgeuse appears to glow red whereas Rigel looks blue in color.

Q: star that is moving toward Earth will   a. have its spectral lines shifted to the red.   b. have…

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Q: Two stars – A and B, of luminosities 0.5 and 4.5 times the luminosity of the Sun, respectively – are…

A:

Q: If you observe a star’s blackbody spectrum twice, once from Earth and once from a space shuttle…

A: When radiation passes through any sample of gas, the atoms get excited by absorbing that particular…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.