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4 votes

3 answers

3k views

How far could you see from an airplane at 35,000 feet?

asked Mar 10, 2021 at 22:20

4 votes

5 answers

1k views

If gravity isn’t a force how does it cause motion? [duplicate]

asked Sep 5, 2021 at 23:42

4 votes

4 answers

790 views

Why do object accelerate towards the Earth in general relativity?

asked Dec 17, 2021 at 19:17

3 votes

4 answers

323 views

Why do individual helium atoms rise?

asked Sep 8, 2021 at 23:30

3 votes

1 answer

393 views

Is there anything that can be created from absolutely nothing? [closed]

asked Sep 20, 2021 at 12:41

1 vote

3 answers

4k views

Relationship between gravity and density

asked Mar 10, 2021 at 18:00

1 vote

2 answers

635 views

Why is the buoyant force of some object equal to the gravitational force of the fluid displaced? [duplicate]

asked Oct 9, 2021 at 4:30

1 vote

0 answers

74 views

Where does the energy from expanded light go? [duplicate]

asked Dec 19, 2021 at 1:40

1 vote

1 answer

124 views

Does this paper show that the universe could have come from nothing?

asked Jan 15, 2022 at 5:25

0 votes

0 answers

58 views

How do you know what focal lengths to use in a 3 lens terrestrial/Galilean telescope?

asked Feb 5, 2023 at 3:21

0 votes

2 answers

1k views

Why do “sparks” fly off of hot metal when compressed?

asked Sep 27, 2021 at 4:33

0 votes

2 answers

717 views

How do museums keep Foucault’s pendulum going constantly?

asked Sep 11, 2021 at 0:18

0 votes

2 answers

397 views

How do rockets create thrust in a vacuum? [duplicate]

asked Jul 6, 2021 at 5:52

0 votes

0 answers

41 views

When is gravity a force? [duplicate]

asked Sep 4, 2021 at 16:36

-3 votes

3 answers

1k views

Why does the national center for science education say “gravity is only a theory”? [closed]

asked Oct 3, 2021 at 14:22

Stack Exchange Network

15 Questions

How far could you see from an airplane at 35,000 feet?

If gravity isn’t a force how does it cause motion? [duplicate]

Why do object accelerate towards the Earth in general relativity?

Why do individual helium atoms rise?

Is there anything that can be created from absolutely nothing? [closed]

Relationship between gravity and density

Why is the buoyant force of some object equal to the gravitational force of the fluid displaced? [duplicate]

Where does the energy from expanded light go? [duplicate]

Does this paper show that the universe could have come from nothing?

How do you know what focal lengths to use in a 3 lens terrestrial/Galilean telescope?

Why do “sparks” fly off of hot metal when compressed?

How do museums keep Foucault’s pendulum going constantly?

How do rockets create thrust in a vacuum? [duplicate]

When is gravity a force? [duplicate]

Why does the national center for science education say “gravity is only a theory”? [closed]