User Dave Coffman

27 votes

Freefall into snow

answered Feb 25, 2015 at 23:39

8 votes

Accepted

Will gravity pull together two bodies from the other side of an empty universe?

answered Sep 1, 2014 at 0:50

6 votes

Accepted

Why are the backs of airplanes curved?

answered Jul 1, 2014 at 20:31

5 votes

Accepted

Why I can't feel the difference of atmospheric pressure between a closed room and outside?

answered Jan 18, 2015 at 20:23

5 votes

Why my simple electromagnetic experiment does not work?

answered Jun 7, 2014 at 20:04

4 votes

Accepted

Standing wave velocity

answered Jun 24, 2014 at 20:19

4 votes

Accepted

acceleration of particles - thought experiment

answered Mar 6, 2015 at 21:44

3 votes

Pulley system. Why do I need to put a minus sign?

answered Aug 5, 2016 at 21:55

3 votes

Accepted

How does a fixed amount of transmitted radio energy supply an unknown number of destinations?

answered Aug 13, 2014 at 19:45

3 votes

Would it be economical to add a counterweight to rocket launches?

answered Jun 9, 2014 at 0:02

2 votes

Launching a unpropelled rocket

answered Jun 8, 2014 at 15:57

2 votes

How can black hole increase its mass?

answered Jun 8, 2014 at 21:44

2 votes

Will two perpendicular orbits settle into a disc?

answered Jun 27, 2014 at 22:30

2 votes

How does the Alcubierre drive warp space in the vicinity of it's destination?

answered Jul 8, 2014 at 0:51

2 votes

Can "vacuum be brought" from outer space?

answered Aug 9, 2014 at 16:17

2 votes

Doppler effect- will frequency continually decrease?

answered Aug 17, 2014 at 17:28

2 votes

Accepted

If you dig a deep tunnel, will the rock sublimate?

answered Aug 26, 2014 at 19:29

1 vote

Buoyancy force on a hung object

answered Feb 10, 2015 at 21:12

1 vote

Accepted

Does lever needs gravitation to work?

answered Aug 14, 2014 at 20:22

1 vote

Confusion relating the application of Work-Energy theorem

answered Aug 20, 2014 at 18:24

1 vote

Ideas for high school physics paper, including simulations

answered Aug 20, 2014 at 23:50

1 vote

Are Both figures correct?

answered Aug 22, 2014 at 15:24

1 vote

Blueshift and increase in energy!

answered Aug 22, 2014 at 15:50

1 vote

Increase contrast on the image taken by CCD camera

answered Aug 23, 2014 at 13:42

1 vote

Who invented the perfume bottle thought experiment?

answered Aug 23, 2014 at 14:16

1 vote

Dissipating light pollution

answered Aug 10, 2014 at 23:10

1 vote

What restores balance to a repulsive electric force on an electroscope?

answered Aug 10, 2014 at 23:57

1 vote

Accepted

How do objects outside a spacecraft fall "around" the earth?

answered Jul 1, 2014 at 1:21

1 vote

Protect drone from lightning

answered Jul 1, 2014 at 1:27

1 vote

Elastic collision of point particle and rod

answered Jun 6, 2014 at 22:00

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39 Answers

Freefall into snow

Will gravity pull together two bodies from the other side of an empty universe?

Why are the backs of airplanes curved?

Why I can't feel the difference of atmospheric pressure between a closed room and outside?

Why my simple electromagnetic experiment does not work?

Standing wave velocity

acceleration of particles - thought experiment

Pulley system. Why do I need to put a minus sign?

How does a fixed amount of transmitted radio energy supply an unknown number of destinations?

Would it be economical to add a counterweight to rocket launches?

Launching a unpropelled rocket

How can black hole increase its mass?

Will two perpendicular orbits settle into a disc?

How does the Alcubierre drive warp space in the vicinity of it's destination?

Can "vacuum be brought" from outer space?

Doppler effect- will frequency continually decrease?

If you dig a deep tunnel, will the rock sublimate?

Buoyancy force on a hung object

Does lever needs gravitation to work?

Confusion relating the application of Work-Energy theorem

Ideas for high school physics paper, including simulations

Are Both figures correct?

Blueshift and increase in energy!

Increase contrast on the image taken by CCD camera

Who invented the perfume bottle thought experiment?

Dissipating light pollution

What restores balance to a repulsive electric force on an electroscope?

How do objects outside a spacecraft fall "around" the earth?

Protect drone from lightning

Elastic collision of point particle and rod