Calculate the mass of black hole with a radius of 20 km.
Q: Calculate the gravitational redshift of radiation of wavelength 550 nm (the middle of the visible…
A: The gravitational redshift is given by the formula, z=11-2GMc2r-1 where, G is the gravitational…
Q: Which mathematical quantity is imagined to be present at the center of a black hole? a) Unity b)…
A: Answer:- Option (b) correct. Singularity
Q: What is a black body? On what factors does the radiation emitted from it depend?
A:
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: What type of explosion occurs when a black hole is born? Group of answer choices Gamma-ray Burst…
A:
Q: 25) To what size the Earth should shrink to become a black hole?
A: Schwarzschild radius is the limit to which a body can shrink before undergoing irreversible…
Q: In the experiment of Pound and Rebka, a 14.4-keV gamma ray fell through a distance of 22.5 m near…
A: Photons are affected by gravity. Their kinetic energy will be reduced by an increase in the…
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: (a) Calculate the photon capture radius and the Schwarzschild radius of M87* (in AU). (b) Why was it…
A: Schwarzschild radius is given by the formulars=2GMc2G is the universal gravitation constant,…
Q: If a planet's distance is 1AU from a black hole, what is the mass of the black hole with a…
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: Determine how much time a black hole having 3 solar masses will take to radiate its energy.
A: As per the quantum mechanical model of a black hole, they emit radiations known as Hawking…
Q: What causes X-ray emissions in a binary system of a star and a black hole?
A: A binary system is two gravitational bodies orbiting each other with a common center of mass. A…
Q: Assume a neutron star has a mass of about 1.2 times the mass of the Sun and a radius of 7…
A: Given: Mass of neutron star = 1.2 times mass of sun. Radius of neutron star = 7 km. Diameter of…
Q: Which of the following observatories is most likely to discover a black hole in a binary system? A.…
A: A binary system is defined as a system in which two objects revolve around each other, having a…
Q: How can we “observe” a black hole if neither matter nor radiation can escape from it?
A: Given: Black hole
Q: an introduction on what is the event horizon of a black holes?
A: The occasion horizon of a black hollow is a essential idea in astrophysics that marks the boundary…
Q: How do black holes form?
A:
Q: search for observational evidence of black holes began in the early a. 1890s. b. 1930s. c.…
A: Observational evidence of black holes : Black holes was first predicted by Albert Einstein in 1916 .…
Q: What would happen if you were to jump feet first into a black hole?
A: If we jumped in feet first into a blackhole, we would be torn into pieces via the process of…
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 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: Homework help How much energy would be released if a space probe of mass 165 kilograms fell onto…
A: As per Stephen Hawking, when matter falls into a black hole, the same amount of energy is radiated…
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: Calculate the redshift caused by a neutron star with a radius of 11 km and mass of 5.2 x 1030 kg.
A: As per general relativity when a photon leaves a gravitational well its wavelength will increase…
Q: What would you have to do to make earth a black hole ?
A: Black holes are objects in space from which even light can not escape. What makes the black hole so…
Q: Why are gravitational waves so difficult to detect?
A: An invisible ripple in the space, which is traveling at the speed of light is known as gravitational…
Q: What does a black hole sound like?
A: Black hole is a heavenly body.
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: Assume a neutron star has a mass of about 1.2 times the mass of the Sun and a radius of 7…
A: Basic Details The radius of the Event horizon around a black hole is also known as the Schwarzschild…
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