Briefly explain the state of the universe from the time t=0 s to t= 104³ s after the Big Bang.
Q: Name the two parts of Modern relativity and explain.
A: Modern relativity is divide into two parts. Those are: 1. Special theory of relativity 2. General…
Q: State the problems of the Hot Big Bang model in cosmology, and briefly explain how inflation solves…
A: Given the question; we need to state the problems of the Hot Big Bang model in cosmology and explain…
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: Describe the expanding universe theory (Big Bang Theory) based on observed astronomical evidence…
A: According to the Big Bang Theory, the universe is expanding from the state having high temperature…
Q: As the Universe becomes older, what effect will that have on a slope of the Hubble's diagram: It…
A: Doppler effect in light is the change in frequency of light observed by the observer when the source…
Q: What are the three important pieces of evidence that led scientists to accept the Big Bang as the…
A: The Big Bang model is one of the many theories that were developed to explain the birth of the…
Q: How can astronomers view events that happened in the universe’s distant past?
A: We all know that time travel is not possible, so an astronomer can't go into the past using a time…
Q: Contra Parmenides and a previously universally accepted idea, at the end of his life, Stephen…
A: In this question we have to select the argument made by Stephen Hawking.
Q: explain semi-classical gravity
A: Solution: To explain the semi classical gravity
Q: So if our universe is about 15 billion years old. Do we think this because we can't see farther away…
A: We are known the age of universe. We are given that age of universe is about 15 billion years. There…
Q: Identical twins A and B are separated at birth, A staying home and B traveling at constant speed…
A:
Q: Astar is 1.302 parsecs away, NASA believes they can send a craft to the star at a speed of 0.2c 1)…
A:
Q: Explain why Olbers’s paradox is not a paradox.
A: In the early history of astronomy, it was believed that the universe is static, infinite, uniform,…
Q: how far light would travel in a week on the “cosmic calendar”?
A: To find : How far does the light travel in 1 week of cosmic calender
Q: Calculate the age of the universe for the following Hubble's constant, (b) 65 km/s/Mpc
A: As per Hubble's law, the universe is expanding. If we assume that the expansion's apparent velocity…
Q: What is meant by proper time and proper length?
A: Define Proper time and proper length.
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: Which of the following predictions of the Big Bang indicates that the universe now is around 2.73…
A: The cosmic microwave background radiation. As a result of the expansion of the Universe, it was…
Q: In a Universe with Ω=1, without the presence of dark energy, the expansion of the Universe would a.…
A: Dark energy is the energy present in our universe in a high amount which is something 60% and many…
Q: Estimate the temperature of the universe when it was approximately 1 minutes old
A: Our universe is thought to be formed from a singularity of infinite density and temperature. It…
Q: State the three problems of the Hot Big Bang model in cosmology, and briefly explain how inflation…
A: The three main problems of the Hot Big Bang model in cosmology are the horizon problem, the flatness…
Q: Which of the following were given as evidence supporting the Big Bang Theory? The red shift in…
A: The options are: 1. The red shift in star spectra 2. Microwave energy across the universe at…
Q: What was the lowest temperature for photons to be able to produce 0 particles in the early universe?…
A: Given: kT=mc2
Q: Can you travel between parallel universes?
A: The term parallel universe is the alternating universe or the alternative reality. The parallel…
Q: Calculate the age of the universe for the following Hubble's constant, (a) 50 km/s/MDC
A: As per Hubble's law, the universe is expanding. The recessional velocity of galaxies is directly…
Q: 17) In an accelerating Universe, the scale factor a. grows at an ever-decreasing rate over time. b.…
A: The scaling factor, represented by a(t), tells us to what extent our universe has expanded. Now if…
Q: Summarize The Big Bang Theory and its evidence
A: Humans have been always keen on knowing how the universe came into existence. For this, they…
Q: Explain why the speed of light is the maximum attainable
A: Hi , please find the answer
Q: What is the twin paradox?
A: the twin paradox is a thought experiment in special relativity involving identical twins, one of…
Q: Hello from 2042! (A letter from students’ future selves, narrating their lives 20 years after…
A: The letter that you have been asked is written as follows:Dear 2023 Graduates,Greetings from the…
Q: The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and…
A: The beam is at rest and so the sum of the torques must equal zero. But we can choose about which…
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