How much mass would have to be converted to energy to get the energy of one-megaton bomb of TNT? One megaton of TNT = 4 × 10 15 Joules

Q: the earth is 4.6 billion years old but human civilization the building of cities begin only about…

A: The fraction of age of human civilization to the age of earth is,

Q: Which type of fusion reaction supports stars for the longest time? Group of answer choices hydrogen…

A: The hydrogen to helium fusion reaction supports stars for the longest time. Because, the force of…

Q: The magnitude of the solar constant that has a temperature of 5800 k and a radius of 7 * 10^5 km and…

A: Temperature (T) = 5800 Kelvin Radius (R) = 700000 km = 7×108 m Distance (d) = 1.5×1011 m

Q: If there are 3x10^7 seconds in one year, a distance of one light year is equal to: O 9 x 10^15 m O 9…

A: Given data:  Time (t) = 3 × 107 seconds Required: Distance of one light year

Q: Earth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent…

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Q: How much mass would need to be converted to energy in one hour to provide the sun with 1.378x10^30…

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Q: Suppose we find an Earth-like planet around one of our nearest stellar neighbors, Alpha Centauri…

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Q: Calculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The…

A: The light-year is the unit of length, and it is used to represent the astronomical distance.

Q: Which elements are created in stellar nucleosynthesis? (Select all that apply) - oxygen - helium…

A: Among the elements listed, hydrogen and helium were created during big band and the rest of the…

Q: When we look at a particular star, we are seeing it as it was 371 years ago. How far away from us…

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Q: Imagine a planet orbiting a star. Observations show a Doppler shift in the star's spectrum of 52 m/s…

A: Given that:

Q: Earth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent…

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Q: Why is it difficult to detect planets orbiting other star

A: Cosmology and astronomy deal with astronomical bodies such as planets, stars, galaxies, comets.…

Q: What is the distance in meters to our Sun that is 500 light-seconds away?

A: The time taken by the light to travel from Earth to Sun is t = 500 seconds. Assume the speed of the…

Q: Star A has a temperature of 6,000 K. How much energy per second (in J/s/m²) does it radiate onto a…

A: Temperature of star  A = 6000 k σ = 5.67×10-8 J/s/m2/k4

Q: Why do bigger stars burn out quicker(have a shorter lifespan

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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: A sample of carbon-14 has a mass of 2.0 × 10–6 g. Carbon-14 has a half-life of 6000 years. How much…

A: Given  The mass or amount of carbon-14 is Ao = 2.0 × 10–6 g. The half-life time is h = 6000 years.…

Q: Your astronaut twin brother is exploring a planet of a star far out in space. Ignoring the time…

A: Brother's age 2 years for 1 year of my age⇒ t∘=t   ,     t'=2t

Q: In a certain binary-star system, each star has the same mass which is 8.5 times of that of the Sun,…

A: GIVEN :                Mass of star = M = 8.5 x mass of sun                distance between stars =…

Q: If a star converted every bit of its mass into energy the conversion efficiency would be 100%.…

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Q: Billions of years from now, our Sun will eventually end its life as a

A: Stars like our will go to phase called Red Gaint phase after completion of the fuel and then they…

Q: What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of…

A: initial velocity , vi=0                           d = 12 m  final velocity      vf = ? We know that…

Q: The distance from Earth to Mars is about 784,000,000 km. How many light-years is this?

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Q: Earth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent…

A: The expression for the luminosity of the sun is given as, L=4πd2b

Q: Nearly all planets that astronomers have found orbiting other stars have been giant planets with…

A: Yes it is proves that our solar system is unique. The number of planets we have and their distance…

Q: Why do we think that nothing, other than light, can travel faster than the speed of light?

A: According to the Einstein’s theory of relativity nothing can travel faster than light.

Q: An astronomer on a planet orbiting the star Deneb wants to differentiate the reflected light by…

A: Given: The radius of the Earth is 6200 km. The distance from the Sun is 1.5x108 km.

Q: Define synchrotron radiation?

A: Synchrotron radiation

Q: Earth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent…

A: Given dataIntensity of light I=1300 wattm2Distance between earth and sun R=1.5x1011 mApply inverse…

Q: Doppler-shift technology can be used to determine a star's technology has provided evidence that the…

A: Doppler shift is used to determine whether a star is moving towards us or moving away from us.

Q: It is year 2080 and we have figure out a propulsion system that allows spaceships travel at…

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Q: The Pioneer 10 spacecraft has left our Solar System and is traveling at a speed of 45,000 km/h (and…

A: The Pioneer 10 spacecraft has left our Solar System and is traveling at a speed of 45,000 km/h…

Q: The half-life of Carbon-14 is 6,000 years. How old is an object that started with 10,000 Carbon-14…

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Q: Light from the Sun reaches us in nearly A. 2 minutes B. 4 minutes C. 8 minutes D. 16 minutes

A: Introduction: The distance of the sun from the Earth is 1.49x108 km. The speed of the light is 3x108…

Q: A 1.00-m² solar panel on a satellite that keeps the panel oriented perpendicular to radiation…

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Q: What do you mean by length contraction?

A: The length of any moving object is measured to be shorter than its original length, which is the…

Q: A particular star is 4.5 × 1014 km away from Earth.    What is this distance in light-years (ly)?

A: We know  1 light year = 9.461 × 1012 kilometres

Q: If a star converted every bit of its mass into energy the conversion efficiency would be 100%.…

A: The total energy accounted for the total mass of the sun can be calculated as below,

Q: hoose a unit distance in cm that would easily fit on a piece of paper. Let this be your scale…

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Q: Would would happen to Spacetime at the surface of the Sun if you kept the volume the same but…

A: Answer:- The spacetime curvature would increase with increasing density.

Q: Which of the following scientists have contributions relating to intelligent alien life-forms?…

A: Cannon and Hubble : Observational cosmologists. Drake and Sagan : Contributions relating to…

Q: Please list 4 different forms of energy present in the universe?

A: Given that: Please list 4 different forms of energy present in the universe?

Q: If you travel at one half the speed of light, How long does it take to reach a star which is 4 light…

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Q: If Jim could drive a Jetson's flying car at a constant speed of 330 km/hr across oceans and space,…

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Q: Calculate the time constant of the RC-circuit depicted here

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Q: If all the matter in your body (or any other human being) were to be compressed into a singularity,…

A: Event horizon is the threshold around a blackhole where the escape velocity just increases the speed…

Q: Earth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent…

A:

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.