Calculate the size to which the Sun should shrink to become a blackhole.
Q: What is a black body? On what factors does the radiation emitted from it depend?
A:
Q: How does the lighthouse model explain pulsars? in two sentences.
A: Pulsars are spinning neutron stars that emit beams of radiation from their magnetic poles
Q: How can a black hole emit X-rays?
A: Black holes are regions of high gravity in spacetime. Once a black hole is formed it will start…
Q: Calculate the mass of black hole with a radius of 20 km.
A: For a blackhole, the radius of the event horizon or the point of no return is defined as the…
Q: The expanding bubble of hot gas shown in the figure, which has been inflated by the light from a…
A:
Q: Place the large black ball (black hole) in the center of the sheet. Experiment with different sized…
A:
Q: Why is dark matter a problem?
A: Without dark matter stars would escape their galaxies and galaxy clusters would come unbound.…
Q: Calculate your body’s volume. Next, assume that the nuclei are densely packed. Atomic distances are…
A:
Q: Is there a way to quantify Dark Matter?
A: Required : Is there a way to quantify Dark Matter ?
Q: Match the definitions to the terms. Blueshift Redshift : When a star is moving toward Earth, the…
A: The redshift and blue shift phenomena are based on the doppler effect of light. The shifting in…
Q: A Black Hole gets its name because it is the remains of a massive black star. True False
A: When the massive stars collapse, then the black hole is produced. It absorbs all the mass and light…
Q: Is the event horizon of a black hole the actual physical surface of the object?
A:
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: If the inner accretion disk around a black hole has a temperature of 1,000,000 K, at what wavelength…
A: Black holes are regions of large gravitational force in spacetime. The gravitational force is so…
Q: An x-ray photon escapes the accretion disk of a black hole of 5 solar masses and a radius of 14.7…
A: As per general relativity due to space-time curvature, the frequency of the photon will reduce as it…
Q: Explain the term Gravitational lensing?
A: Gravitational lensing is the term that is used to describe the bending and distortion in the path of…
Q: Why haven't we detected any Primordial black holes?
A: Primordial black holes or PBH are black holes that formed soon after the birth of the universe. The…
Q: What is Stefan-Boltzmann constant? What is its value?
A: Stefan-Boltzmann law states that the total radiant heat energy emitted from a surface of the source…
Q: How does a gravitational red-shift differ from a Doppler red shift?
A:
Q: What would the wavelength of the 21 cm line be for a source moving away from the Earth at 10% the…
A: As per the Doppler effect, the observed wavelength can be found as, Here, λO, λS, v, and c…
Q: Calculate the Eddington limit for star of 10³0 Msun.
A: In a star, the radiation pressure is constantly pushing away matter while gravity is pulling it in.…
Q: Make a web search and explain in your own words dark energy and dark matter ( in astronomy )
A: Our universe is dominated by mysterious and invisible form of matter and energy. Universe consist…
Q: Consider hot Jupiter with a temperature of 3138 K orbiting the star Vega at what wavelength in nm…
A: given- Temperature of jupiter =3138 K
Q: How can we “observe” a black hole if neither matter nor radiation can escape from it?
A: Given: Black hole
Q: Calculate the mass of a black hole at room temperature.
A: Black holes are regions of space-time where the gravity is very large that nothing, not even light…
Q: The longest wavelength of light humans can see is around 750 nm, deep red. If we were to observe a…
A: For light coming near a black hole, the light gets red shifted due to gravity. The observed…
Q: How can a black hole be massive but not big?
A: A blackhole is a region in space which have an extremely high gravitational field so that even light…
Q: The radius at which nothing can escape the pull of a black hole is called the ________.
A: The radius at which nothing can escape the pull of a black hole is called the Schwarzschild radius.
Q: the Sun were to become a black hole at what distance will the escape veloc
A: The distance at which the escape velocity of a black hole becomes the speed of light is called the…
Q: What is the orbital period of a bit of matter in an accretion disk 2 x105 km from a 10-solar-mass…
A: Black holes are regions of high gravitational force in spacetime. The gravitational pull is so large…
Q: What are the ranges of mass for white dwarfs, neutron stars, and black holes?
A: The remains of a star that has collapsed, an extremely dense state with no empty state between its…
Q: (Astronomy) Schwarzschild Radius. Part A: Find the Schwarzschild radius for the least massive…
A: please see the next step for solution
Q: The time it would take for the Sun to consume all its hydrogen (if the Sun's luminosity remained…
A: All-stars like our Sun are powered by nuclear fusion. It is a nuclear reaction in which two lighter…
Q: an introduction on what are black holes and how they are formed?
A: As per the we have to give introduction on what are Black holes and their formation.
Q: A spaceship is located around 2.6×10¹³ km from the black hole Messier 87. It has a mass of 6.6…
A: Time is not absolute, it depends on the speed and gravitational field present. The time measured…
Q: Suppose the temperature of a blackbody increases by 20%. What will happen to the total rate at which…
A: Energy radiated by a blackbody depends on its temperature and the relationship between temperature…
Q: How likely is it for a black hole to collide with Earth? Would we have much warning?
A: In space-time curvature, black holes are the region where the gravity is so strong that nothing even…
Q: As a mass m of gas falls into a black hole, at most 0.1mc2 is likely to emerge as radiation; the…
A:
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
