How many light years are in one parsec? (Use at least two significant figures)

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: Recall that Hubble’s Law is given by V=HR; this means that H has units of inverse seconds (1/sec).…

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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: Which unit of measurement is larger?

A: 1 rad = 57.3 degree. So for 1 rad we required 57.3 degree.  So 1 degree = (1/57.3) < 1 rad

Q: A light-year is defined as the distance traveled by light in a vacuum during one tropical year. How…

A: Given data: A light-year is defined as the distance traveled by light in a vacuum during one…

Q: In the length unit exercise, what tool did you use to measure the circles?

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Q: If you start at the equator and travel to 10 degrees north approx. how many kilometers (or miles)…

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Q: Calculate the magnitude of proper motion using ascension of 16.851 and declination-10.756 mas/yr

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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: At what distance is an object if its parallax, as measured from either end of a 1000-km baseline, is…

A: The given data we have: Baseline: 1000km The parallax is to be measured at angles θ=1o,1',1''

Q: 8. Complete the table: Elastic Potentlal Energy/J Stiffness Constant/N/m Extenslon/m 7.00 0.20 3.0…

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Q: Suppose the Sun were somehow replaced by a star with five times as much mass. How long would the…

A: Earth year is the amount of time that the earth takes to complete 1 revolution in its orbit about…

Q: Convert 3,000 grades/century to Mega Hertz (MHz)

A: to convert : 3000 gradescentury to Mega Hertz

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: As we discussed, the radius of the Earth is approximately 6370 km. The Sun, on the other hand, is…

A: Given:  Radius of Earth = 6370 km Radius of Sun  = 700,000 km Distance between earth and sun =…

Q: Explain Parallax

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

Q: Why do clocks go clockwise?

A: Sundial is the first ever clock made in the universe, which is the predecessor of any clock. All the…

Q: An arcminute is what fraction of a degree?

A: we know 1 degree =60 arcminutes=60x60 arc seconds

Q: Given that the Diameter of Earth is about 7200 miles how many Earths would fit across the sun ?

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Q: The difference in absolute magnitude between two objects at the same distance is related to their…

A: "Since you have asked multiple question, as per our guidelines we will solve the first question for…

Q: 3. Use the chart given to answer the following Height above earth ) tquatorial Radius (m) orbital…

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Q: Astronomers use a special unit to measure distances called astronomical unit (AU) where 1 AU is…

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Q: a method for determining the sizes of the orbits of pl from the sun than Earth. His method involved…

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Q: For an observer found at a latitude of 35 degrees North, what is the minimum declination for a star…

A: Determine the MCP value of the star. So, the declination angle will be from 55 degrees to 90…

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

A: We know that 1 light year = 0.3066 parsecs

Q: would have be the duration of the year if the distance between earth and sun were half the present…

A: To find-Duration of the year T2=?GIven-Distance between sun and earth becomes half.

Q: What is the difference in magnitude for two stars is one appears four times brighter than the other?

A: one star  appears four times brighter than the other  It means the intensity of the total…

Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half- life = 5 730…

A: Given: Half life time,t12=5730yr=5730×3.1536×107sMass of archeological sample of…

Q: Which quadrant does A-B lie?

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Q: Which unit of length would most likely be used to measure the distance from Earth to stars other…

A: Answer            d) Astronomical unit

Q: What are the names of the following three well-known constellations?

A: (5) is Cassiopeia Cassiopeia, in Greek mythology, was a vain queen who often boasted about her…

Q: A distant galaxy has an apparent magnitude of 13 and is 5,000 kpc away. What is its absolute…

A: Apparent Magnitude The apparent magnitude of a star or a galaxy is the measure of how bright the…

Q: As we discuss in class, the radius of the Earth is approximately 6370 km. The radius of the Sun, on…

A: The radius of the earth Re = 6370 kmThe diameter of the earth de= 2Re = 12740 kmThe radius of the…

Q: You travel to another star system and meet some aliens. They say there are 146 constellations in the…

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Q: The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the…

A: Part a: Magnitude in astronomy is defined as an index for the brightness of a star and is denoted by…

Q: Exercise: One parsec is a unit of distance equal to roughly 3.25 light-years. The prefix Mega means…

A: For this problem, it is required to convert the distance 24 Mpc into kilometers. It is given that, 1…

Q: The fictional city of Torontino radially has a population density of 1000e^(−0.01r^2) people per…

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Q: Is the ecliptic the same thing as the celestial equator? Explain

A: The celestial equator is the intersection of the Earths equatorial plane with the celestial sphere,…

Q: How many kilometers are there in 5 parsecs?

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Q: How far (in km) is 3.5 lightyears(ly) – the distance traveled by light in one Earth year? - How…

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Q: How far (in km) is 1 lightyear (ly) – the distance travelled by light in one Earth year? Use 299,732…

A: d=vt

Q: Calculate the length of one light-year (ca), in metres.

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Q: How would i calculate 9.3x107miles to the sun. How would you write this distance as a standard…

A: We need to find the distance from the earth to sun in metres because that is the SI unit of…

Q: I attempted to answer this question and I'm not sure what I am doing wrong. My formula says A.S. =…

A: Here we have to use some basic formula

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.