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Astronomy | Astrophysics
Why do power plants produce electricity as AC instead of DC?
Astronomy | Astrophysics
A moon orbits a planet at a distance of 1,010,000 km the moons orbital period about the planet is 15.9 days. What is the mass of the planet?
Astronomy | Astrophysics
Determine the quantity of heat needed to raise the temperature of a 10 kg piece of steel from 0°C to 100°C. Compare this to the amount of heat needed to raise the temperature of the same mass of water through the same temperature difference. The specific heat capacity of steel is 450 J per kilogram per degree Celsius.
Astronomy | Astrophysics
A skydiver with a mass of 68.96 kg dives out of a perfectly good airplane and plummets toward the Earth below. After falling for several seconds, the diver's acceleration is measured at 4.05 m/s2. What is the magnitude of the force of air resistance at this moment?
Astronomy | Astrophysics
Vector A has a magnitude of 35.1 m/sec and a direction of 215 degrees. What are its x- and y- components?
Astronomy | Astrophysics
How can I calculate the change in the mass fraction of Hydrogen and the mean molecular weight in that inner 10% of that star over a time period?
Astronomy | Astrophysics
The Sun is going down, and most of the land is dark, still we can see silhouettes and outlines of objects because some light is still ____________ the atmosphere.
Astronomy | Astrophysics
Compare and contrast the celestial interpretations knowledge and astronomical practices of different cultures.
Describe how modern scientist have gathered physical evidence ( scrolls ancient tablets pictographs petroglyphs ) or studied megalithic and ancient architectural structures to study the ancient astronomical belief system.
Describe how modern scientist have gathered physical evidence ( scrolls ancient tablets pictographs petroglyphs ) or studied megalithic and ancient architectural structures to study the ancient astronomical belief system.
Astronomy | Astrophysics
What is inside a black hole?
Where does the things goes which are sucked in black hole?
Please give me much detail!
Where does the things goes which are sucked in black hole?
Please give me much detail!
Astronomy | Astrophysics
What is a Black hole in universe?
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#339914 on Dec 2023
#339914 on Dec 2023