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Astrophysics
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Questions (191)
According to the Kardashev scale, what is a Type I civilization? A) They tend to utilize the energy of colliding planets in
1 answer
asked by
Naveen
190 views
Select the correct answer from the list.(1 point)
The of dark matter causes baryonic gas and dust to .
3 answers
asked by
MCR_GeeWay
66 views
Find the escape speed from (a) the Sun, (b) a white dwarf star with one solar mass (same as the Sun) and radius 10,000 km, (c) a
1 answer
asked by
Anon
433 views
According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), which material is by far the most plentiful
3 answers
asked anonymously
102 views
A simple temperature model for the solar nebula disk is
Tdisk(a) = 20 × SQRT 100 AU/ a K, (1) where a should be expressed in
1 answer
asked by
.
461 views
In a binary star system in which 2 stars orbit each other about their centre of mass, the mass of one star is 20m while the
1 answer
asked by
Ahsanur
468 views
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might
2 answers
asked by
Anonymous
542 views
Before Dark Energy could be discovered, several preconditions needed to be in place. Tick all the factors below which were
1 answer
asked by
keitanako
463 views
We observe a galaxy at z = 1, and a quasar at z = 2. What is the redshift of the quasar as observed from that galaxy? Enter a
1 answer
asked by
simar
442 views
To form a nebula, pulls matter together or causes an .
First one. Gravity, heat, pressure. Second choice an explosion, infrared
5 answers
asked by
Pls help
126 views
What are some theories or explanations behind the phenomenon of black holes?
1 answer
asked by
pls help
293 views
If a galaxy is traveling away from us at 2.0% of the speed of light, roughly how far away is it?
t= light years I got 2.4x10^8
2 answers
asked by
Leila
729 views
which was used to create the first image of a black hole
3 answers
asked anonymously
109 views
Predict the size of the image of Jupiter if photographed at opposition with a lens having a focal length of 9600 mm ( Assume
1 answer
asked by
Blake
323 views
use the inverse square law to show that in space shuttle territory, 200 kilometers above 94 percent of that at earths surface??
1 answer
asked by
Anonymous
411 views
Select the correct answer from the list.(1 point) The of dark matter causes baryonic gas and dust to .
3 answers
asked anonymously
59 views
When parts of a gas cloud collapse, where does the material first form clumps?(1 point) Responses in less dense regions with
3 answers
asked anonymously
49 views
In order from earlier to later times, the dominant components of our universe have been:
* dark energy, matter, then radiation *
2 answers
asked by
qwerty
479 views
In the Tully-Fisher relation, the scatter is minimized at which wavelength?
* Red * Blue * Infrared * UV
1 answer
asked by
qwerty
292 views
The single largest uncertainty in the measurement of the Hubble constant using gravitational lenses comes from uncertainty of...
1 answer
asked by
qwerty
363 views
Which event triggers the start of black hole formation?(1 point)
Responses a. Radiation emitted by a massive star increases. b.
3 answers
asked by
wig
82 views
big bang theory define
3 answers
asked by
Luis
938 views
Which event triggers the start of black hole formation?(1 point)
Responses Radiation emitted by a massive star increases. The
3 answers
asked by
wig
74 views
What is theratio of the luminosity per aquare meter coming from a part of the Sun that is 5800 K versus a sunspot where the
1 answer
asked by
Linda
387 views
Fill in the blanks.
Dark Matter___ absorb light, ___, emit radiation, and ___ been observed directly.
3 answers
asked by
qwpovj
230 views
Scientists have discovered a new planet. The planet is in a solar system whose star is similar in size to the sun and is about
3 answers
asked by
dani
69 views
Which provides evidence of universe expansion that supports the Big Bang theory? Select the three correct answers.
a. Galaxies
3 answers
asked by
Connexus Student
69 views
a 1kg satellite has an orbital period of 4 hours. what's the altitude?
1 answer
asked by
wesley
325 views
Which are accurate statements about dark matter?
3 answers
asked anonymously
122 views
Over time how will the distribution of matter in a galaxy cluster change
3 answers
asked anonymously
39 views
Where could scientists look to observe a black hole?(1 point) Responses the edge of the solar system the edge of the solar
3 answers
asked by
b33ft0ads
52 views
12. Which is evidence for the existence of dark energy?
* 1 point galaxies that are rotating at a constant rate Pulsars that seem
3 answers
asked by
help me cuz
91 views
7. Which is a characteristic of dark matter?
* 1 point it does not interact with baryonic matter it has not been observed
5 answers
asked by
help me cuz
188 views
state how the sun generates the energy that it radiates away as its luminosity.
1 answer
asked by
dede
355 views
Select the correct answer from the list.(2 points) Dark matter absorb light, emit radiation, and been observed directly.
7 answers
asked anonymously
87 views
which evidence supports the idea that CMB radiation is a remnant of the big bang?
its mass is uniform its temperature is uniform
3 answers
asked anonymously
30 views
What the definition of dark energy?
* 1 point Energy that humans cannot observe directly Energy that has a small effect on the
3 answers
asked anonymously
68 views
Which is evidence for the existence of dark energy?
* 1 point galaxies that are rotating at a constant rate Pulsars that seem to
3 answers
asked anonymously
60 views
Which correctly relate dark matter and dark energy to the Big Bang theory? Select the two correct answers.(1 point)
Responses
3 answers
asked anonymously
55 views
Redshift is observed when:(1 point)
Responses a luminous object is stationary relative to an observer. a luminous object is
3 answers
asked anonymously
42 views
Which statement is INCORRECT about Cosmic Microwave Background radiation?
O its temperature is uniform. O it consists of
3 answers
asked anonymously
65 views
How did dark matter affect the development of structures in the early universe?(1 point) Responses It seeded the development of
7 answers
asked anonymously
73 views
Light travels approximately
5.87 X 10^12 miles in one year. This distance is called a light year. Suppose a star is 2 X 10^4
4 answers
asked by
kendall
1,239 views
What evidence do astronomers use to detect black holes? please help and thank you :)
4 answers
asked by
maya
574 views
The temperature of the sun at its center is about 2.7×107 degrees Fahrenheit. What is this temperature written in decimal
4 answers
asked by
baddie💎
73 views
I’d prefer thorough solutions, but if you can only provide formulas that would solve each part of the problem, that’d be
2 answers
asked by
Mark
573 views
Hi, this requires some basic knowledge of astrophysics. I missed last lecture that covered this, so though I'd prefer thorough
1 answer
asked by
Mark
508 views
What happens to the peak wavelength in the blackbody spectrum as the temperature of a star increases?
a) It decreases. b) It
4 answers
asked anonymously
47 views
Calculate the escape velocity from a red giant's atmosphere (use the formula for escape velocity from chapter 2). Assume that
1 answer
asked by
singh
976 views
What is cosmic microwave background
1 answer
asked anonymously
25 views
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Astronomy
Physics
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