Why would it be easier to take parallax measurements if we were on a planet farther from the sun than Earth?

Q: When using the parallax method, if an object appears to shift more, that means its distance is…

A: Parallax method is used to find the distance of an object. It is the shift in the apparent position…

Q: What is the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec.

A: Annual parallax (p), p=0.129 arcsec

Q: A certain quaternary star system consists of three stars, each of mass m, moving in the same…

A: The expression for the period of the each of three stars is,

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section),…

A: As given, Mass of Neutron star is equal of mass of Sun. MN=MS=M=1.989×1030 kg Radius of neutron…

Q: Some thing that is 50 km away has an angular size of five arc seconds how tall is the object write…

A: Angular size, θ = 5 second of arc Distance, r = 50 km = 50×103 m Consider height is h.   First…

Q: Neutron Star Angular Size. If Earth's Moon were replaced by a typical neutron star, what would the…

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Q: Suppose that the Sun runs out of nuclear fuel and suddenly collapses to form a white dwarf star. The…

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Q: Find the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec.

A: Given: Annual parallax (p) = 0.129 arcsec.

Q: A star 2.5 times the mass of the sun and collapsed to a size of 12 km rotates with a speed of 1.2…

A: Gravitational acceleration is,

Q: Sun

A: The distance of a nearby star from the earth is calculated by a method called a stellar parallax…

Q: How far away is the star Spica, whose parallax is 0.013"?

A: Given Data: The parallax of the star Spica is, p=0.013’’   The expression for the distance in terms…

Q: A star is observed to have a parallax of 0.05". If we were to send a radio signal towards this star…

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Q: 1. Calculate the acceleration of gravity on A) the Earth. B) the Moon. C) a neutron star.

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Q: If the parallax angle of a star is (0.369) arcseconds, then the distance of the star from the Earth…

A: Using the relationship between the parallax angle and distance of the star and the earth is given…

Q: Why can’t astronomers use parallax to measure the distance to stars that are extremely far away?

A: Because it is difficult to measure from earth reason is effects of earth atmospheric. Parallel angle…

Q: When using the parallax method, if an object appears to shift less, that means its distance is…

A: By using the parallax method, if an object appears to shift less means its distance is greater.

Q: Explain Parallax

A: There is an apparent shift in position of the object due to the change in point of observation .This…

Q: The velocities of the two stars are 28km/s and 13km/s, and their periods are both 16 years. Find the…

A: Formula Let period of a star is T, velocity is v, orbital radius is r and , mass is M, Now the…

Q: Find the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec. pc

A: It is given that,

Q: Why is a black hole invisible?

A: A black hole is a region in space where the pulling force of gravity is so strong that light is not…

Q: When you say "sub-word parallax," what do you mean?

A: Answer:-  Parallax is the apparent displacement of an observed object due to a change in the…

Q: The star Spica is observed to have a parallax of 0.012000. How far away is it in parsecs answers to…

A: Parallax is the change in the apparent position of the object that results from a change in…

Q: the parallax angle of a star to be 0.002 arc-seconds.  what would the  distance be to this star?

A: Given, Parallax angle, p=0.002 arc-seconds

Q: To approximate the distance from the Earth to stars relatively close by, astronomers often use the…

A: Given : Distance between the Earth and the Sun, SE = 92,900,000 mi Parallax angle, p = 0.033 arcsec…

Q: How many parsecs are there in 212 light-years?

A: We know that 1 light year = 0.3066 parsecs

Q: The apparent magnitude of a star is (4.3) and the parallax angle is (0.161) arcseconds. The absolute…

A: The absolute magnitude of a star is given by the formula, M=m-5 log10D10 where D is distance of the…

Q: A star a distance of 1 parsec away has a parallax angle of 1 definition. by arcsecond arcminute…

A: A parsec is defined as the distance to a star which has a parallax angle of 1 arcsecond.

Q: If a star is 30 parsecs away what is it's observed parallax shift ?

A: Given thatThe distance to the star (d)=30 parsecsParallax Formulad=1pp=the parallax angle of the…

Q: What is the dependence of the intensities of stars on parallax? Hint: consider the inverse-square…

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Q: is

A: The relationship between apparent visual magnitude(m), Absolute visual magnitude(Mv) and distance(d)…

Q: How does luminosity differ from apparent brightness ?

A: The difference between luminosity and apparent brightness depends on distance. Luminosity is an…

Q: What is an eclipsing binary?

A: Eclipsing binary is a variable star. It comes under binary star system.

Q: If the parallax angle of a body is 0.218 4 points arcseconds, then the distance of the body from the…

A: parallax method is useful to measure larger distance. For example distance between earth and sun,…

Q: The apparent magnitude of a star is (4.3) and the parallax angle is (0.161) arcseconds. The absolute…

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Q: between january and july , Star appears to move 5 degrees while star b appers to move 7 degress…

A: From January to July, in the span of 6 months, the 2 stars - A & B, are observed. Star A…

Q: what is the answer for sub-item (b) if the radius of the neutron star is 3.457 km? (express your…

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Q: A large star of 1018 kg and a small star are 105 meters apart and attract with 6.7 N. What is the…

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Q: You measure a star to have a parallax angle of 0.04 arc-seconds. What fraction of a degree is this?

A: Given 0.04 arc second=....°

Q: You measure a star to have a parallax angle of 0.12 arc-seconds What is the distance to this star in…

A: Write the given values of the problem- Parallax angle=0.12 arc-second

Q: Over the course of 6 months, a star's parallax angle is measured to be 0.083 arcseconds. What is the…

A: Given that, Parallax angle = 0.083 arcseconds

Q: A less massive star will usually live longer than a more massive star O True O False

A: In star hydrogen is the fuel

Q: Find the distance in parsecs to Proxima Centauri, which has an annual parallax of 0.772 arcsec.

A: We need to find distance in parsecs

Q: What is the distance to a star with a parallax angle of 0.5 arcseconds? A. 5 parsecs B. 15 parsecs O…

A: parallax method   It is one of the best method to find the distance of the nearby object by using a…

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section),…

A: Average density is, ρ=MV=Msun43πR3

Q: What is the parallax of a star that is 13.00  light-years away?

A: The parallax is an methond to calculate the distance between the objects in universe. It is based on…

Q: The bright star Sirius has a parallax angle of 0.38 arcsec. Find the distance in parsecs and in…

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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.