How do scientists / astronomers spot a black hole? *   A. by using gamma rays and x-rays to detect high energy sources B. by using radioactive waves to detect high energy sources C. By using high energy to detect gamma rays and x-rays D. By using massive telescopes to detect gamma ray

Q: The star Sirius A is 8.66 light-years from Earth. Imagine a spaceship that travels from Earth to…

A: Time dilation or contraction of time is the concept from the relativity. When observed from the…

Q: 1. What type of radiation is currently used by the scientists to detect black hole candidates? a)…

A: A gamma ray (g) is a packet of electromagnetic energy (photon) emitted by the nucleus of some…

Q: It is believed that there is a black hole with a mass of approximately four million times the mass…

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Q: Neutron Star Accretion Disk. If the accretion disk around a 2.25-solar-mass neutron star has a…

A:

Q: On December 27, 2004, astronomers observed the brightest flash of light ever recorded from outside…

A: Write the given values of the problem- Years=250,000 Time=0.20 s

Q: Part 1. Stellar Mass Black Holes These are the collapsed cores of massive stars which end their life…

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Q: Astronomy) (Part A) White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and…

A: Mass of the dwarf planet = 0.98 solar mass                                          = 1.96 * 1033 gm…

Q: Neutron stars are some of the densest objects in the universe. They form during supernova ex-…

A: Given:-  The Density of the Neutron is 5 x 1017 kg/m3 The mass of the earth  is M = 5.97 x 1024 kg…

Q: A star is observed to undergo circular orbit around the black hole located at the centre of the…

A: We have a star which is undergoing a circular orbit of radius R=1000 AU=1.469*1014m with a time…

Q: You decide to travel to a star 52 light-years from Earth at a speed that tells you the distance is…

A: distance of star (L) = 22 light year distance of star (proper distance) (Lo) = 52 light years let…

Q: 4) Using the Boltzmann equation, calculate the ratio of atoms in the n=2 to n=1 energy levels for…

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Q: Jupiter radiates more energy than it receives from the Sun by 8.7 ×10–10 LO. Jupiter's radius is 7.1…

A: Conservation the principle that in a system that is not subject to external influence, the total…

Q: The star Sirius A is 8.66 light-years from Earth. Imagine a spaceship that travels from Earth to…

A: Time dilation or contraction of time is the concept from the relativity. When observed from the…

Q: 23. General relativity * is a theory of gravity which is equivalent to Newton's gravitational model,…

A: the correct option is (c) : is a theory of gravity which states that gravity is not a force.

Q: 1) What is a 'black-body'? 2) What is the characteristic of Black-body radiation? 3) What is the…

A: Note : According to guidelines, we will answer only one question. If you want other question to be…

Q: Estimate the luminosity of a 3-solar-mass main-sequence star; of a 9-solar-mass main-sequence star.…

A: The relationship between luminosity and mass of the main-sequence star is given by, L=M3.5  (1)…

Q: Cesar reads about the big bang theory, which explains that the universe expanded as the result of an…

A: Cesar reads about the big bang theory, which explains that the universe expanded as theresult of an…

Q: 3. If the radius of the Earth is 6 x 106 m, how do the radii compare? (Same procedure as Question…

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Q: Astronomers can determine the heat of various areas of the universe by making observations about…

A: Gamma rays have the shortest wavelengths and the highest energy levels of any electromagnetic wave.…

Q: Astronomy) Cygnus Loop Velocity. If the Cygnus Loop is 25 pc in diameter and is 10,000 years old,…

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Q: (Astronomy) Orbital Period. What is the orbital period of a bit of matter in an accretion disk…

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Q: c) The Earth reflects 30% of this energy: Determine the temperature on Earth’s surface. (d) What…

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Q: A gamma ray burst delivers approximately 1.0 X10-6 joules/m2 to a detector on an orbiting space…

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Q: White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and its density is about 2…

A: It is given that, M=0.98 solar mass=0.98×1.989×1030 kg=1.95×1030 kgρ=2×106 g/cm3=2×106×103…

Q: 51 Pegasi" is the name of the first normal star (besides the Sun) around which a planet was…

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Q: Einstein said that gravity exists because: *   A. massive objects warp space. B. of the existence of…

A: Einstein said gravity exist because Let's check each option one by one. A. Massive object warp space…

Q: is Lorentz law? Give definition, background, uses and examples of it.

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Q: Use Wien’s law to answer the following questions: (a) The cosmic background radiation peaks in…

A: According to Wien’s law, The temperature in this case can be obtained as

Q: 225 2025 The diagram above shows a conceptual model of a spherical star that generates and emits…

A: a) power generated in interior = volume of star  x power generated per unit cc…

Q: 6. Determine the radius of the event horizon if a star of mass 11 X kg explodés intó nova and…

A: mass of star = M =  11 X 1030 Kg radius of black hole = R = ? Universal gravitational constant = G =…

Q: ) Auroras have been observed near the magnetic poles of Uranus. (i) Explain how these lights are…

A: Due to the magnetic field of Uranus the charged particles coming from the Sun get deflected by its…

Q: As a star ages, it is believed to undergo a variety of changes. One of the last phases of a star's…

A: Stars undergo variety of changes as it ages. There different stages of aging but eventually become…

Q: 3. About 50,000 years ago, a meteor crashed into the Earth near present-day Flagstraff, Arizona.…

A: From the question, it is given that- Mass of meteor: m = 1.4 x 108 kg Terminal speed of meteor: v =…

Q: The most massive stars in the Universe have a surface temperature that can reach over 50 000 K. Life…

A: Given:Temperature of the star, T = 43000 K

Q: Hunting a black hole. Observations of the light from a certain star indicate that it is part of a…

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Q: What is Hubble’s law?

A: Hubble's law According to Hubble's law the galaxies  are expanding with the rate which is…

Q: A nearby star that was recently discovered and found to have a surface temperature of 3,042 K and a…

A: Surface temperature of the star T = 3042 k Radius of the star R = 15.4 % of sun's radiation R = 15.4…

Q: At least a good four or five billion from years a "dead" white now the Sun will become dwarf stac,…

A: Let original radius =  R let original mass = m Final radius = 0.01 R Initial moment of inertia =…

Q: A student wants to determine the Stefan-Boltzmann constant, o. The student then measures the 3)…

A: For a straight-line graph, the equation for the same is given as, Here, m is the slope, and x and y…

Q: Our Sun shines bright with a luminosity of 3.828 x 1026 Watt. Her energy is responsible for many…

A:

Q: 1. Which of these is true about the Big Bang model?   a. The singularity is an established,…

A: From the earliest known times to its subsequent large-scale evolution, the Big Bang theory has been…

Q: Our Sun shines bright with a luminosity of 3.828 x 10^26 Watt. Her energy is responsible for many…

A: Hi, this question has more than three sub-parts. We will answer the first three sub-parts.

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.