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Astronomy Science

10/04/22

How would we be able to stop or keep a black hole in a specific place?

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Astronomy Math

10/03/22

finding the density of a moon

Jupiter’s moon, Europa, has a radius of 3,130 km and a mass of 4.8 × 1022 kg. Calculatethe density of Europa. Remember, density is defined as the mass per unit volume. I’veworked out the volume of... more

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Astronomy

09/19/22

You have discovered the planet Zoltron. It is 6.0 times farther from the Sun than Earth (6.0 AU). How long does it take this planet to go once around the Sun?

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Astronomy Physical Science Geology Regents

09/07/22

What is the format of the earth science regents?

Currently, the written part of the regents is worth 85 points: 50 multiple choice questions and 35 questions that include extended response, graphs, maps, calculations, etc. There is also a lab... more

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Astronomy Geometry Physics Geology

08/02/22

Long Exposure Pictures (Circular? vs. Streaks. Center Point? Always Same? What is the Star?)

To an expert that can help my curiosity,How is it the night sky becomes a circular streak of chalk like lines on a space/sky canvas on a long exposure pictures? Would it not consist of streaks... more

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Astronomy

07/22/22

Which type of star would have the longest lifespan?

A. none of the options, we cannot determine the lifespan without its compositionB. High mass starC. Medium mass starD. Low Mass star

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Astronomy Science Chemistry Physics

06/26/22

About gravity my biggest question

I have a big question. According to Newton's law of Gravitation, every single atom attracts every other atom in the universe. The scientists have hypothesised a partical, gluon, to be responsible... more

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Astronomy

06/16/22

Figurative Universe (Quesiton in description)

Imagine a Universe where the average density of luminous matter is only 2% of the critical density, HOWEVER there is 1000 times as much dark matter as luminous matter in that Universe. What would... more

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Astronomy

05/20/22

How do astronomers measure extreme cosmological distances?

A: Cepheid variable stars. B: Tully-Fisher correlation. C: Geometric parallax. D: Hubble’s Law.

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Astronomy

05/20/22

Which of the following is a characteristic of active galaxies?

A: They generally exhibit no signs of explosive activity. B:Their energy emission cannot be explained as the accumulated emission of their stars. C: Their energy output is steady in time D: They... more

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Astronomy

05/20/22

The creation of a proton and an antiproton (matter and anti-matter) can occur if...

A: the energy of two colliding photons is at least as great as the combined mass-energy of a proton/anti-proton pair.B: photons at the event horizon of a black hole gain energy from the black hole... more

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Astronomy

04/11/22

Now if the star that emitted the photon were traveling AWAY from Earth at 1 x 106 m/s, how much FARTHER from Earth would the star be after one second?

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Astronomy Physics

04/09/22

Does dark energy mean repulsive gravity?

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Astronomy

03/10/22

A star with a radius three times that of the Sun and a surface temperature twice that of the Sun, will have a luminosity _______ times as great as the Sun's luminosity.

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Astronomy

02/16/22

Objects A and B are orbiting each other. Object A has twice the mass of Object B. What can you say about their orbits?

Objects A and B are orbiting each other. Object A has twice the mass of Object B. What can you say about their orbits?A: The orbital path of Object A is smaller than the orbital path of Object B.B:... more

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Astronomy

02/16/22

Why don’t planets fly off into space? What’s keeping them in place? Also try to explain why planets don’t fall directly into the Sun.

Why don’t planets fly off into space? What’s keeping them in place? Try to reason why planets don’t fall directly into the Sun.

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Astronomy

02/16/22

The average lemon is 2.5 inches in length. How many lemons could you fit, end-to-end, in between the Earth and the Sun?

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Astronomy

02/04/22

pls help me with work

Weight is mass times the acceleration of gravity. If an individual weighs 188 pounds on Earth, how much will they weigh on Jupiter? Assume the acceleration of gravity on Jupiter is 2.76 times the... more

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Astronomy

02/04/22

pls help me :))

The radius of Jupiter is about 72.0 × 103 km. The radius of the Sun is about 72.0 × 104 km. How many Jupiter volumes would fit inside the Sun's volume?

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Astronomy

02/04/22

I'm really confused pls help

Ceres, the largest asteroid and a dwarf planet, has a semi-major axis of about 2.67 AU. What is Ceres’ orbital period in years about the Sun?

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Astronomy

02/04/22

pls help me :))

Anwita is on a geology field trip and finds a rock that contains 53 % of the original potassium-40, while remaining amount of potassium-40 had decayed into argon-40. The half-life of potassium-40... more

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Astronomy

02/04/22

pls help due soon

The radius of Jupiter is about 69.0 × 103 km. The radius of the Earth is about 6000.0 km. How many Earth volumes would fit inside Jupiter's volume?

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Astronomy Physics

01/30/22

Why doesn't the earth fall into the sun? Is it because the centrifugal force cancels out the centripetal force?

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Astronomy Physics

01/30/22

As the work done by the Sun on Earth is 0, so is this the reason for earth not falling into the sun?

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Astronomy

01/25/22

A mercury like planet has a semi major axis of 0.371 AU has and an eccentricity of 0.22 what is the perihelion distance in AU

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Answers •1

How would we be able to stop or keep a black hole in a specific place?

finding the density of a moon

You have discovered the planet Zoltron. It is 6.0 times farther from the Sun than Earth (6.0 AU). How long does it take this planet to go once around the Sun?

What is the format of the earth science regents?

Long Exposure Pictures (Circular? vs. Streaks. Center Point? Always Same? What is the Star?)

Which type of star would have the longest lifespan?

About gravity my biggest question

Figurative Universe (Quesiton in description)

How do astronomers measure extreme cosmological distances?

Which of the following is a characteristic of active galaxies?

The creation of a proton and an antiproton (matter and anti-matter) can occur if...

Now if the star that emitted the photon were traveling AWAY from Earth at 1 x 106 m/s, how much FARTHER from Earth would the star be after one second?

Does dark energy mean repulsive gravity?

A star with a radius three times that of the Sun and a surface temperature twice that of the Sun, will have a luminosity _______ times as great as the Sun's luminosity.

Objects A and B are orbiting each other. Object A has twice the mass of Object B. What can you say about their orbits?

Why don’t planets fly off into space? What’s keeping them in place? Also try to explain why planets don’t fall directly into the Sun.

The average lemon is 2.5 inches in length. How many lemons could you fit, end-to-end, in between the Earth and the Sun?

pls help me with work

pls help me :))

I'm really confused pls help

pls help me :))

pls help due soon

Why doesn't the earth fall into the sun? Is it because the centrifugal force cancels out the centripetal force?

As the work done by the Sun on Earth is 0, so is this the reason for earth not falling into the sun?

A mercury like planet has a semi major axis of 0.371 AU has and an eccentricity of 0.22 what is the perihelion distance in AU

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