What is positively curved universe?
Q: When was universe was created
A: Big Bang theory: This give the information about how universe began. According to Big Bang theory "…
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: Which factor has slowed down the expansion of the universe?
A: The expansion of the universe has slowed down because the object pull each other towards themselves…
Q: What would be the Hubble constant if the universe were 18 billion years old?
A: The age of universe is given as, t = 18 billion years (or) t = 18×109 years TO DETERMINE: The…
Q: Astronomers have measured the age of the Universe to be about 14 billion years. Explain how this age…
A: Astronomers estimated that the age of universe is about 12 to 14 billion years. There are two…
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: Calculate the critical density of our universe.
A: Our universe is expanding and critical density is defined as the average density of matter that is…
Q: What is the evidence that the universe was very uniform during its first 400,000 years?
A: The universe was formed from a big explosion called Big Bang. In the beginning, everything was…
Q: cceptable theoryaboutthe origin of the formation of universe and what does it state about the…
A: The widely accepted theory for the origin and evolution of the universe is the Big Bang model,…
Q: How do black holes form and what is their effect on the surrounding universe?
A: One of the strangest things in the universe is Blackholes. Blackholes are highly massive and the…
Q: What do you mean by dark matter?
A: Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be…
Q: Calculate the age of the universe when its temperature was 10¹¹ K.
A: The universe was once part of a singularity of very high density and temperature. All the forces and…
Q: What is the densest subsatnce in the universe?
A: At a modest temperature and pressure the most densest element on Earth surface is Osmium.
Q: What if the Andromeda galaxy were to disappear How long before we would notice?
A: About 2.5 million light-years separate our solar system from the Andromeda galaxy. If it vanished,…
Q: How much of the universe appears to be the normal ordinary matter? Group of answer choices 50% 95%…
A: CONCEPT: Among the whole universe, only a small part is visible and the remaining part is…
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: Which galaxies are moving the fastest away from us?
A: Our nearest galaxy is Milky way.
Q: How can physics help us gain a greater understanding of the interconnected ness of everything in the…
A: The ness interconnection of the universe can be understand with the help of physics. The physics…
Q: What does the size difference of the irregularities in the background radiation tell us about the…
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Q: How black holes made us?
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Q: When the universe was approximately one second old its size grew by a factor of 10 to the power of…
A: When the universe was approximately one second old its size grew by a factor of 10 to the power of…
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: When do cosmologists think the universe began?
A: We have fundamental forces in nature. They are gravitational, electromagnetic, weak and strong…
Q: What is the evidence that the universe was very uniform during its first 400,000 years?
A: The evidence of the uniform nature is explained by particle physics. Before the formation of the…
Q: What does the redshift of the galaxies tell us about their motion with respect to the Earth?
A: The displacement of the spectrum of an astronomical object toward longer wavelength (red) due to the…
Q: Why was the idea that the universe is eternal and unchanging abandoned?
A: The universe is eternal and unchanging abandoned because the universe was found to be expanding in…
Q: If most galaxies are moving away from us, are we at the center of the universe? Why or why not?
A: Introduction: The universe encompasses everything in existence, from the smallest atom to the…
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: Briefly discuss and compare the three general types of galaxies.
A: We need to discuss and compare the three general types of galaxies.
Q: Problem 8 : A small sphere of radius r0 = 1.5 cm rolls without slipping on the track shown in the…
A: Solution: Given Values, r0 =1.5 cm= 0.015 m R0 =25 cm= 0.25 m θ = 1350
Q: Calculate the age of the universe for the following Hubble's constant, m (c) 80 km/s/Mpc Of
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Q: Calculate the age of the universe when the temperature was 10¹ K.
A: The age of the universe when the temperature was 1013 K. Given, TemperatureT=1013 K
Q: The presence of dark energy affects to the way the Universe is expanding. Select one: True False
A: Dark energy is a hypothetical form of energy which acts opposite to gravity. It occupies the…
Q: How do galaxies form?
A: Two leading theories describe how the first galaxies were created. One says galaxies were born when…
Q: What is the twin paradox?
A: the twin paradox is a thought experiment in special relativity involving identical twins, one of…
Q: How do we know galaxies are moving away from us?
A: Electromagnetic radiations are affected by the Doppler shift. When the source is in relative motion…
Q: What is negatively curved universe?
A: A surface has negative curvature at a point if the surface curves away from the tangent plane in two…
What is positively curved universe?
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