Why Is It Not Easy To Quantize Gravity?

Q: Why would it be easier to take parallax measurements if we were on a planet farther from the sun…

A: Parallax is the apparent shift in the position of a star when viewed from two…

Q: What is the evidence that dark matter exists?

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Q: Some thing that is 50 km away has an angular size of five arc seconds how tall is the object write…

A: Angular size, θ = 5 second of arc Distance, r = 50 km = 50×103 m Consider height is h.   First…

Q: why in the pythagorean theorem formula is it "a^2 - b^2" instead of "a^2 + b^2"

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Q: 2.

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Q: Sun

A: The distance of a nearby star from the earth is calculated by a method called a stellar parallax…

Q: 2. Using your average Hubble's constant, calculate the age of the Universe. For this, first, we use…

A: Given: Hubble constant H=71 [km/sMparsec] According to Hubble`s law, it was found that the galaxies…

Q: List other discoveries that support the big bang theory and are consistent with Hubble's discovery.

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

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Q: Two 700kg masses are separated by a distance of  0.45m. Using Newton’s law of gravitation, find the…

A: Using Newton's law of gravitation, F=Gm1m2r2

Q: Four masses are positioned in the corners of a square as shown, with fifth mass positioned right at…

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Q: Why is gravity the weakest of all forces?

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Q: Do binary stars (double-star systems that orbit about a common center of mass) radiate gravitational…

A: Binary stars are the system of double star which orbit around a common center of mass.

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: Which is the strongest force in the universe?

A: Introduction: The universe is made up of matter and energy. Various forms of energy and matter can…

Q: Why is it difficult to detect planets orbiting other star

A: Cosmology and astronomy deal with astronomical bodies such as planets, stars, galaxies, comets.…

Q: Is Hubble's law applicable in another planet or galaxy?

A: In this question we have to answer whether the Hubble's Law is applicable in another planet or…

Q: is gravitational instability

A: Gravitation or just gravity is the force of attraction between any two bodies. All the objects in…

Q: What exactly is dark matter?

A: Particles that do not absorb, reflect, or emit light, hence cannot be detected by electromagnetic…

Q: About: Lorentz Law Required: • history of person who discovered it • definition and uses •…

A: History of person who discovered it: We know that every charge experiences force when it is under…

Q: Can we find a unified theory of physics?

A: Unified Field Theory:- A unified field theory (UFT) in physics is a sort of field theory that…

Q: What are gravitational waves, and have they yet been observed either directly or indirectly?

A: An object moving in space, a disturbance will be produced with time in the form of ripples like that…

Q: What is the Cyclotron?

A: A cyclotron is a type of particle accelerators. It accelerates the charged particles. It provides a…

Q: What do you mean by cyclotron?

A: What do you mean by cyclotron:- EXPLAINATION:- It  is a type of particle accelerator in which…

Q: In 3–5 sentences, explain how the shape of planetary orbits affects their orbital velocity. Include…

A: In space every object moves in a fixed path  that is known as orbit .The  Shape of orbit is not…

Q: How can gravity be stimulated in an orbiting space station?

A: The major challenge to be overcome in space shift is to stimulate gravity to overcome the health…

Q: Explain Birth of the earth in light of Big Bang Q.3. theory.

A: The Big Bang theory explains the origin of the universe.But not the origin of earth.  We know that…

Q: What’s the history behind gravitational waves?

A: Gravitational waves are 'ripples' in space-time that result from some of the Universe's most…

Q: Choose the BEST answer to the following: If a star that is 20 light-years from Earth explodes,…

A: The disturbances, happens in the curvature of the space time is the gravitational waves. The…

Q: The tidal force is a differential force: dF/dr, which is the difference between the force at one…

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Q: Make a web search and explain in your own words a method to measure distances in universe.

A: There are different methods to measure distances in universe.

Q: This flowchart represents one model of scientific method used to show the relationship between the…

A: Emphasizing on the first point of the flow chart: ObservationGoing through the history of the space,…

Q: why we read semi classical gravity?

A: Semi-classical gravity is the approximation to the theory of quantum gravity in which the matter…

Q: Which of the following scientists have contributions relating to intelligent alien life-forms?…

A: Cannon and Hubble : Observational cosmologists. Drake and Sagan : Contributions relating to…

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: What do you mean by Gravitational waves?

A: The waves propagating outward from their source at the light speed is known as the gravitational…

Q: What is Heinrich Hertz discovery and experimentation? please answer it using diagram.

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Q: What was the one greatest milestone from the space race?

A: SOlution: The greatest milestone of the spacerace.

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.