Why does the Sun not collapse under its enormous weight? a) The Sun is about 4.6 billion years old. If it could have collapsed by now , it would have. b) Because the Sun is in hydrostatic equilibrium. c) Because the Sun is not in hydrostatic equilibrium. d)More than one of the above.

Q: 4. What is solar neutrino problem? How was it resolved

A: Neutrinos are subatomic particles. Solar neutrinos are the particles released inside the sun's core…

Q: 2. Explain the different mechanisms that power the internal heating of a giant star, a main sequence…

A: Question :          Explain the different mechanisms that power the internal heating of a…

Q: An image of the disk of the Sun shows a higher brightness at the centre compared to the edges.…

A: The phenomenon you are describing, where the center of the Sun appears brighter than its edges, is…

Q: The solar wind carries mass away from the Sun at a rate of about 2 million ton/s (where 1 = 1000…

A: Sun is the star located at the center of our solar system and is a G-type main-sequence star (G2V).…

Q: how big is the sun?

A:

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: Which of the following layers of the Sun can be seen with some type of telescope? Consider all forms…

A: Required : Which of the following layers of the Sun can be seen with some type of telescope.

Q: Why do sunspots appear dark? a. Regions of the photosphere are obscured by material in the…

A: The solar spots are mostly cooler places than the surroundings

Q: Which of the following is least reasonable regarding energy production in the Sun? Group of answer…

A: The statement that is least reasonable regarding energy production in the Sun is:"Although the Sun…

Q: Through nuclear fusion reaction, the Sun and stars produce energy. True or false?

A:

Q: sun emits light having maximum intensity at a wavelength 468nm. Assume emissivity of sun is 1.…

A: Option

Q: The radius of the Sun is 7x10⁸ m and its mass is 2x10³⁰kg.What is the density of the Sun (density =…

A:

Q: The solar wind carries mass away from the Sun at a rate of about 2 million ton/s (where 1 = 1000…

A: Solution:From the Astrophysical data book, the following data are obtained for the solar radiation…

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: Using the concept of hydrostatic equilibrium, explain why the Sun does not collapse under the weight…

A: Hydrostatic equilibrium is the balance between the gravitational force and the pressure gradient…

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: If steel has ten times the density of water, how many times more dense is the hydrogen plasma at the…

A: Soln:   Density of water (SW ) = 1 gm/cm3  ----  (1)                     As density of steel is…

Q: What causes the Sun's magnetic fields get wound up as the solar cycle intensifies? Convection in…

A: solution is given a

Q: Use the luminosity of the sun, the total amount of energy it emits each second, to calculate how…

A: The luminosity of a star is defined as the amount of energy radiated by the star per second. It can…

Q: From the following facts deduce the type of solar activity. 1. Focused eruption; 2. High energy…

A: Concept used: Solar prominence is bright feature extending from Sun's surface to Corona due to Sun's…

Q: G

A:

Q: The sun produces energy from matter in its core through the process of

A: We need to name the process in which the sun produces energy from matter in its core.

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: Rank the layers of the Sun based on their average temperature, from hottest to coolestA) CoronaB)…

A: The temperature of the core of the sun is about 15 million kelvin. Radiative zone has temperature…

Q: Even if the Earth's orbit were circular, we would still have seasons. The reason is that…

A:

Q: zone

A: To choose : The layer of sun in which the nuclear fusion takes place.

Q: Use Stefan's law to calculate how much less energy is emitted per unit area of a 4500-K sunspot.

A: Sunspots are large dark regions formed on the Sun's photosphere. They are formed due to magnetic…

Q: According to the Stefan-Boltzmann law, how much energy is radiated into space per unit time by each…

A: A blackbody absorbs all the radiation that falls on it and then re-emits it.   Stars can be…

Q: Solar scientists want to measure the temperature inside the sun by sending in probes. Imagine that…

A: Increase in temperature for every 10,000 km below the surface of sun = 106 oCCost of measuring x…

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: The diameters of the circles that make up the solar images in Dean's photo are about 1/100 the…

A: The angle from each opening in the leaves to the circle cast on the dean.s photo is the same angle…

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: Explain in detail the carbon-nitrogen-oxygen fusion chain that occurs in the center of the Sun

A:

Q: Use the Virial Theorem to estimate the temperature in the core of the Sun

A: Definition: Virial theorem states that when a system is in one equilibrium state and changes to…

Q: Why the sun does not get ripped apart by the outwards pressure of nuclear fusion?

A: Sun produce energy by fusing hydrogen into helium at its core. There is a outward pressure due to…

Q: Solar x-ray flares represent an explosive release of stored magnetic energy. The energy initially…

A: NOTE: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: Estimate the rate at which the Sun loses mass (kg/s) due to the solar wind. Assume the solar wind is…

A:

Q: 1. When will the Sun exhaust its supply of hydrogen and no longer maintain the same state of…

A: We know that we receive solar energy from sun. This energy is released due to nuclear fusion. The…

Q: How long does it take for energy produced in the Sun's core to reach the photosphere?

A: Ans. (E) : a few hundred thousand years. Explanation :-

Q: (1) the solar luminosity has been constant since the Sun formed, and (2) the Sun was initially of…

A: If E is the rate of energy radiated by the sun and L is the luminosity of the Sun, then the time…

Q: What is the cause of sunspots, flares, and prominence? Explain

A: Sunspots are areas on the surface of sun which is cooler than other parts of the sun.

Q: Status of Sun's core and its temperature (The letters correspond to the FUSION If fusion is…

A: Required :  Correct options

Q: Give the following figure of the sun, label the features observed and describe some of the…

A: