whats the mass of a hydrogen proton?

Q: What is a black body? On what factors does the radiation emitted from it depend?

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Q: what is the luminosity-distance formula?

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Q: A cosmic particle is traveling with a speed 0.77 times the speed of light. What is the Lorenz factor…

A: Let the speed of cosmic particle be V m/s And the speed of light be C m/s It is given that... V =…

Q: What is the Lorentz force?

A: Lorentz force

Q: The New Horizons probe is currently traveling at 14.1 km/s. How long would it take to reach Proxima…

A: speed of probe (v) = 14.1 kms= 14100 msdistance (d) = 4 light years

Q: What is the densest substance in the universe?

A: Osmium is the densest thing in the universe.

Q: What are the dangerous of gravitational waves

A: The dangerous of gravitational waves are mention below 1-When a gravitational wave gets emitted, the…

Q: All of your friends like astronomy. Therefore all people your age like asyronomy, This is a type of

A: When all the people like astronomy it means all the people are having interest in astrophysics.…

Q: 1. Calculate the acceleration of gravity on A) the Earth. B) the Moon. C) a neutron star.

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Q: wo identical planets orbit a star in concentric circular orbits in the star's equatorial plane. Of…

A: When planet revolves around star gravitation force provides centripetal force.

Q: Light is without mass, so how can gravity have an effect on light?

A: Einstein’s general theory of relativity explains gravity as distortion of four dimensional spacetime…

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: Calculate the number of miles in a light-year, using 1.86  105 mi/s as the speed of light. (Hint:…

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Q: Would Schrödinger’s equation be valid if applied to the solar system? Would it be useful?

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Q: Have you learned that the Earth is approximately 150 million km away from the Sun, and its orbit…

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Q: A planet in a faraway galaxy orbiting a star in an almost circular orbit with a radius of 3.40 x…

A:

Q: 17. Which of the following statements BEST describes a black hole? use? A. It does not allow light…

A: Answer:B . It is located at center of of a galaxy. C. It is so dense that not even light can escape.…

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: The radius Rh of a black hole is the radius of a mathematicalsphere, called the event horizon, that…

A: We know, Since, h<<50Rh, dr=h.

Q: R Req if Rezn Rea=}

A: Given---- three resistance are in parallel. We have to find--- Equivalent resistance?

Q: The Schwarzschild radius of a certain black hole is 30n kilometers. The mass of this black hole, in…

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Q: What is a black body?

A: Why it is termed as the black body? The black body term arises because incident light will be…

Q: What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of…

A: initial velocity , vi=0                           d = 12 m  final velocity      vf = ? We know that…

Q: An object in Hydra is 4.0 Gly from us. What would we expect its recessional velocity to be?

A: Given data: Distance of object is, d=4.0 Gly=4×109 ly.

Q: What does a black hole sound like?

A: Black hole is a heavenly body.

Q: How do stars move at the north / south pole, at the Earth's equator, and at different latitudes…

A: Stars are the heavier mass objects in the space around which small planets are revolving in…

Q: Astronomer's know that a certain type of star emits the most light at 100nm. However when the…

A: wavelength emitted = 100 nm wavelength observed = 230 nm

Q: The nearest neutron star (a collapsed star made primarily of neutrons) is about 3.00 × 1018 m away…

A: Let the Milky Way galaxy is a disk having the cross sectional area A and the radius of the Milky Way…

Q: What is faster than the speed of light?

A: According to the Einstein theory nothing can travel faster than the speed of light in a vacuum.

Q: s to why it's named "absolute zero," given that it's a re

A: Absolute zero:- If you ever take a balloon outside on a chilly day, you'll notice that it shrinks as…

Q: star has initially a radius of 680000000 m and a period of rotation about its axis of 33 days.…

A: The angular momentum is  L = I w  The rotational kinetic energy is  K = 0.5 Iw2 where, I is the…

Q: What is mass? When does it change?

A: In physics, mass is a quantitative measure of inertia, a fundamental property of all matter. It is,…

Q: If you travel at one half the speed of light, How long does it take to reach a star which is 4 light…

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Q: Researchers have learned that astronauts don’t really care if livingquarters have clearly defined…

A: Answer : True. Demands of human factor psychologists are greater in space flights Each and every…

Q: A light-year is a measure of... O light density O distance O mass

A: A light-year is defined as the distance traveled by light in one complete year of time. Distances of…