Question
In: Physics
Suppose the Earth were a 0.10 Mʘ companion star to the Sun, but still orbiting with...
Suppose the Earth were a 0.10 Mʘ companion star to the Sun, but still orbiting with a semi-major axis of 1 AU about the real Sun. What would some alien astronomer measure the spectral line splitting width to be of the blue-green (λ=490 nm) line in the Hydrogen spectrum of the Sun? Express your answer in units of nm
Solutions
genius_generous answered 2 years agoRelated Solutions
Q10. Assume that the Earth is orbiting the sun in a perfectly circular orbit. If the...
Q10. Assume that the Earth is orbiting the sun in a perfectly
circular orbit. If the Earth is hit by a huge meteorite but its
orbiting angular momentum is not changed (this can be the case if
the hit is along the radial direction of the orbit), what would be
the change in Earth’s orbit?
A. No change
B. Earth would move in a circular orbit with a larger radius
C. Earth would move in a circular orbit with a...
A spaceship travels at a constant speed from earth to a planet orbiting another star. When...
A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 11 years have
elapsed on earth, and 9.7 years have elapsed on board the ship. How
far away (in meters) is the planet, according to observers on
earth?
A spaceship travels at a constant speed from earth to a planet orbiting another star. When...
A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 13 years have
elapsed on earth, and 8.6 years have elapsed on board the ship. How
far away is the planet, according to observers on earth?
A spaceship travels at a constant speed from earth to a planet orbiting another star. When...
A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 14 years have
elapsed on earth, and 9.7 years have elapsed on board the ship. How
far away is the planet, according to observers on earth?
Imagine two planets orbiting a star with orbits edge-on to the Earth. The peak Doppler shift...
Imagine two planets orbiting a star with orbits edge-on to the
Earth. The peak Doppler shift for each 75 m/s, but one has a period
of 7 days and the other has a period of 700 days. The star has a
mass of one solar mass. Assume 1 solar mass equals 2∗10^30.
1.) Calculate the mass of the shorter period planet.
(Hint: See Mathematical Insight Finding Masses of
Extrasolar Planets)
2.) Calculate the mass of the longer period planet.
Suppose a star the size of our Sun, but with mass 5.0 times as great, were...
Suppose a star the size of our Sun, but with mass 5.0 times as
great, were rotating at a speed of 1.0 revolution every 18 days. If
it were to undergo gravitational collapse to a neutron star of
radius 14 km , losing three-quarters of its mass in the process,
what would its rotation speed be? Assume also that the thrown- off
mass carries off either
part a. no angular momentum
part b. its proportional share three-quarters of the initial...
As the galaxy is moving and the solar system orbiting the galaxy and the Earth orbiting...
As the galaxy is moving and the solar system orbiting the galaxy
and the Earth orbiting the sun. So how fast is each object moving
and what is the fastest we move at?
Do we even know how fast the galaxy is moving that is not
relative to another galaxy (although I guess velocity has to be
measured relative to something).
Spectroscopy Question 1.a)What color would Neptune be if it were orbiting a dim red dwarf star?...
Spectroscopy Question
1.a)What color would Neptune be if it were orbiting a dim red
dwarf star? explain your reasoning.
b)What color would Mars be if it were orbiting a bright blue
giant star? Explain youre reasoning.
The Venus-Sun distance is 108 million kilometers, and the Earth-Sun distance is 150 million kilometers. Suppose...
The Venus-Sun distance is 108 million kilometers, and the
Earth-Sun distance is 150 million kilometers. Suppose an imaginary
line from Venus to the Sun forms a right angle with an imaginary
line from Earth to the Sun. How long would it take light to travel
from the Sun to a spaceship halfway along the straight-line path
between Venus and Earth? The time is in minutes.
A satellite is orbiting the Earth at a distance of 2.31 RE and with a speed...
A satellite is orbiting the Earth at a distance of 2.31
RE and with a speed of 3.53 km/s. With what
speed would the satellite hit the Earth's surface if somehow it
suddenly stopped and fell to Earth? Ignore air resistance.
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