Cesar reads about the big bang theory, which explains that the universe expanded as the result of an explosion. He wants to evaluate whether this theory is a good one. Which statement is a characteristic of a good theory? A. It is the idea of only one scientist. B. It does not change as time passes. C. It is not supported by scientific evidence. D. It changes with new observations made by astronomers.

Q: 20. Which of the following statements can support the Big Bang's principle of the expanding…

A: Option c)/ Is correct  The light from the distant galaxies is observed to be red shifted .

Q: 9. Redshift of light from many galaxies was first observed in the 1920s. What was the significance…

A: SOlution:

Q: Cite an evidence that we are living in an expanding universe.

A: The universe we are living in is expanding. This is evident from Hubble's observations in 1929. A…

Q: 6. Determine the radius of the event horizon if a star of mass 11 × 1030 kg explodes into a…

A:

Q: Electromagnetism is one of the four fundamental forces of the universe. What is some supporting…

A: Electromagnetic force is the force between charged particles. In the simpler case when charges are…

Q: responding to a claim that the number of grains of sand was infinite, calculated that the number of…

A: Given information: The Archimedes estimate of the number of grains needed to fill the universe (n1)…

Q: Which is more precise, the mass of the store ruler or the mass of the hand-made ruler?  Explain.

A: Which is more precise, the mass of the store ruler or the mass of the hand-made ruler?  Explain.

Q: What is formed when there is a fusion of two deuterium nuclei in big bang nucleosynthesis? 2. What…

A:

Q: I'm doing a debate about Kalam cosmological. I need to have an example of something out of nothing…

A: Answer:-  Atomic physics, Nuclear Physics, Relativistic Physics , Quantum physics, Thermodynamic and…

Q: A neutron star and a white dwarf have been found orbiting each other with a period of 42 minutes.…

A: Explanation: Generalized form of kepler's third law, M1+M2P2=a3 Mass of white dwarf is M1 = 1 M And…

Q: 6. A Type I error is committed if we make: a correct decision when the null hypothesis is false. a…

A:

Q: 34. What are the dimensions of mass (M), length (L) and time (T) if we take the velocity of light,…

A: Given, Speed of light =  Universal gravitational constant =  Planck's constant (h) =

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: Challenge Problem 1.91 All the stars of the Big Dipper (part of the constellation Ursa Major) may…

A: (a).  Distance = 76.15 ly  (b).  Angle = 129.51°

Q: The temperature of background radiation left over from the Big Bang during the creation of the…

A:

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. Why big bang theory the most accepted theory on the origin of the universe?

A: “Since you have asked multiple questions which are not linked with each other, we will solve the…

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: Integrated Concepts - Large meteors sometimes strike the Earth, converting most of their kinetic…

A: (a) mass, m = 109 kg  velocity, v = 25 km/s The kinetic energy is given by  K = 0.5 mv2K = 0.5 x 109…

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

A:

Q: Supermassive black holes are thought to exist at the center of many galaxies.(a) What is the radius…

A:

Q: Astronomy: The best current evidence is that the rate of expansion of the universe over time is, a.…

A: This question is from astronomy and astrophysics.

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

A:

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: in terms of relativity What is an "event"? Give a specific example of an event and provide the…

A: In special theory of relativity an event can be defined in many ways: More precise way will be say…

Q: 2. The diameter of our Milky Way is roughly - 105 ly(light-year). Planet X at the edge of our Milky…

A:

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: 1. Which of the fllowing properties does not change when speeds of objects approach the speed of…

A: Mass is relativistic on nature i.e. it depends upon velocity of object . According to theory of…

Q: 4) The cosmic calendar of Section 1.2 explains where we are in the universe in time. But time and…

A: Let the speed of light = c To find : the distance traveled by the light in 1 wek of cosmic calender…

Q: What evidence can you cite that the universe is flat?

A: What evidence can you cite that the universe is flat.

Q: Which of the following can be used to describe nuclear fission? Check all that apply.     energy is…

A: Nuclear fission is defined as a kind of nuclear reaction that involves the splitting of a solo…

Q: Homework Statement The solar system is 25,000 light years from the center of our Milky Way galaxy.…

A:

Q: Scientists claim that empty space has an undetectable form of energy known as “dark energy.” This…

A: Dark energy is an theoretical concept which was put forward to explain one of biggest discoveries of…

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: Why is dark energy required to explain the universe as we see it today according to the Big Bang…

A: in this question we discuss about dark energy .

Q: 2- Solve the Friedman Equation for Benchmark Model and treat the Fate of the Universe for special…

A:

Q: 10. According to the Big Bang Theory, how old is the universe?

A: The scientists examined cosmic microwave background radiation to determine its age. The cosmic…

Q: The Millennium Falcon is approximately 35.2 m long. There are conflicting reports, but the Fålcon…

A: Distance run by falcon (Lo) = 12.95 parsec 1 par sec = 3.26 light years Speed (v) = 0.95 c

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.