Status of Sun's core and its temperature (The letters correspond to the FUSION If fusion is occurring in core or in shell around the core, mark with a ✔in the correct column. Core fusion H to He Core fusion He to C Shell fusion H to He Shell fusion He to C PRESSURE VERSUS GRAVITY CORE Pressure comes from electron degeneracy • REST OF THE STAR Pressure Gravity > Pressure region contracts and heats avity Pressure > Gravity gion expands and cools

Q: The layer of the sun that we see is called the photosphere. It has a temperature of 5600 K. What is…

A: This question is based on conversion of temperature.

Q: Why do sunspots look dark? Othey are holes in the photosphere through which the cooler interior of…

A:

Q: Use the luminosity of the sun, 3.83 x 1026 J/s, the total amount of energy it emits each second, to…

A: Let Ls denote the luminosity of the sun. Let E denote the amount of energy radiated by the Sun in…

Q: During the Maunder minimum a. solar brightness dropped slightly b. the average surface temperature…

A: Maunder minimum is a time of reduced sunspot activity.

Q: A loop of gas following the magnetic field lines between sunspots' poles is called a what? \

A: Given: A loop of gas following the magnetic field lines between sunspots' poles is called a what?

Q: Why are heavy elements (atomic number >26) typically only formed in supernovas or collisions of…

A: Heavier elements formed in supernovas and collision of stars

Q: Sunspots are related to the Sun's a. core rotation b. magnetic field lines tangling c.…

A: Correct option is (b) i eagnetic field lines tangling .

Q: The radius of the sun is approximately 700,000 kilometers. What is the volume of the sun

A:

Q: A star is observed with a surface temperature of 3,000 K and a luminosity of 100,000 solar…

A: Given , Temperature = 3000 K Solar Luminosity = 100,000  Now , mass and luminosity are related by…

Q: Multiple Choice During the intermediate step of solar nuclear fusion a. 1 deuterium fuse with 1…

A: 2 deuterium nuclei fuse together making helium-3 and release one neutron together with energy

Q: In a typical solar oscillation, the Sun’s surface moves up or down with a speed of 0.1m/s . If you…

A: Given data *The Sun’s surface moves up or down with a speed is v = 0.1m/s  *The given wavelength is…

Q: 4. Calculate the number density of the negative Hydrogen ion (H-), relative to neutral Hydrogen in…

A:

Q: Why does helium fusion require a higher temperature than hydrogen fusion?

A: Fusion is the process by which two light atomic nuclei combine to form a single heavier one while…

Q: G

A:

Q: The United States consumes about 2.5 3 1019 J of energy in all forms in a year. How many years could…

A: A solar flare is an eruption on the Sun's surface due to magnetic fields accelerating charged…

Q: A sunspot has a temperature of about 4200 K. Use the Stefan-Boltzmann law to calculate how much…

A: Temperature (T) = 4200 kelvin Area (A) = 1 m2time (t) = 1 sec

Q: As recently as the late 1970s, some wrist watches were manufactured using tritium (3H) as a…

A:

Q: The Sun is currently about 4.7 billion years old. How much longer does it have before it runs out of…

A: Given: The Sun is 4.7 billion years old. Introduction: The mass-energy equation says that an object…

Q: A solar flare can release 1025 J. How many megatons of TNT would be equivalent?

A: TNT or Trinitrotoluene is a chemical used for a controlled explosion. Its IUPAC name is…

Q: Order the sequence of events that occur when a start with roughly the mass of the Sun exhausts the…

A: A star that is roughly the size of our Sun is called a medium star, or mid-size star.When most of…

Q: . Imagine a giant sphere with a radius of 1 AU surrounding the Sun. What is the surface area of this…

A: "Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Rank the layers of the Sun based on their average temperature, from hottest to coolest. A)…

A:

Q: The Sun has a radius of 6.955×105 km and a mass of 1.989×1030  kg. What is the density of the Sun?…

A: Considering sun as a sphere, the volume of sun is

Q: How hot is the sun?

A: Answer Sun is the largest and most massive object in the solar system. Sun is about 93 million miles…

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.