User Deiknymi

19 votes

5 answers

14k views

Why aren't airplanes like golf balls?

asked Apr 21, 2014 at 18:07

18 votes

3 answers

4k views

Do mankind and manmade activities/constructions have any effect on the rotation of the Earth?

angular-momentum earth rotational-kinematics

asked Mar 8, 2013 at 4:43

13 votes

1 answer

13k views

What happens to atoms inside a black hole?

black-holes condensed-matter quantum-gravity neutron-stars gravitational-collapse

asked Feb 22, 2013 at 16:37

10 votes

1 answer

1k views

Why do we need to find 5 Higgs Bosons to prove the existence of the dark matter?

particle-physics supersymmetry dark-matter higgs

asked Nov 13, 2013 at 15:02

8 votes

2 answers

524 views

Why are we not affected by the radiation of the radioactive decay going inside the Earth?

radiation earth geophysics

asked Oct 9, 2013 at 14:11

6 votes

3 answers

813 views

Why does the point of intersection of two shadows look brighter?

optics visible-light perception shadow

asked Jan 19, 2014 at 15:08

5 votes

2 answers

4k views

Why does tea rise in the pot but water doesn't?

fluid-dynamics everyday-life surface-tension

asked Mar 24, 2013 at 15:18

4 votes

1 answer

570 views

Why do cold metal plate make less noise?

acoustics metals

asked Apr 22, 2013 at 16:32

4 votes

5 answers

9k views

Can a black hole collapse in itself?

gravity black-holes

asked Feb 22, 2013 at 16:14

4 votes

2 answers

446 views

Difficulty in understading a part of the book "A Brief History of Time"?

special-relativity speed-of-light spacetime

asked Feb 14, 2014 at 7:04

3 votes

5 answers

7k views

Where do photons get their energy from?

energy speed-of-light photons

asked Feb 26, 2013 at 17:51

3 votes

2 answers

7k views

Where do planets get energy to revolve around sun? [duplicate]

energy planets solar-system

asked Mar 8, 2013 at 14:57

3 votes

2 answers

789 views

Why isn't all of the dust in a nebula used in the formation of a star?

gravity astrophysics planets stars nebulae

asked Oct 30, 2013 at 9:48

2 votes

3 answers

3k views

What decides the velocity of a bullet coming out from the gun?

projectile explosions

asked Oct 30, 2013 at 9:55

2 votes

3 answers

2k views

Will this type of engine produce thrust?

fluid-dynamics heat-engine

asked Apr 10, 2013 at 8:51

2 votes

1 answer

960 views

Life of a photon [duplicate]

special-relativity speed-of-light photons time

asked Feb 20, 2013 at 15:44

2 votes

1 answer

67 views

Rotation of tennis ball getting reversed on striking the ground. Reason?

friction rotation

asked Apr 28, 2017 at 13:59

1 vote

1 answer

52 views

When is the speed specified for an object experiencing an exponential force?

homework-and-exercises kinematics integration

asked Mar 25, 2014 at 0:11

1 vote

1 answer

4k views

Is it really possible to walk on water? [closed]

newtonian-mechanics

asked Feb 20, 2013 at 17:07

1 vote

0 answers

75 views

Is the speed of light the ultimate speed limit? [duplicate]

cosmology universe big-bang faster-than-light space-expansion

asked Feb 20, 2013 at 17:14

1 vote

0 answers

131 views

Where do electrons get the energy to remain in orbit? [duplicate]

quantum-mechanics forces atoms atomic-physics

asked Feb 23, 2013 at 17:40

1 vote

1 answer

758 views

A simple thermodynamic question? [closed]

homework-and-exercises thermodynamics

asked Mar 3, 2013 at 18:23

1 vote

0 answers

52 views

Why can't we accelerate to the speed of light? [duplicate]

special-relativity speed-of-light

asked Feb 26, 2013 at 17:39

1 vote

3 answers

1k views

Why the CFL light bulb flashes even if there is a power cut?

electricity electric-circuits

asked Mar 7, 2013 at 17:49

1 vote

1 answer

675 views

Doubt in solving question related to photoelectric effect?

homework-and-exercises photoelectric-effect

asked Oct 4, 2013 at 6:32

1 vote

3 answers

14k views

Magnification for a concave mirror

homework-and-exercises optics reflection

asked Oct 8, 2013 at 1:49

1 vote

3 answers

3k views

Do volcanic eruptions affect Earth's orbit?

forces orbital-motion earth geophysics

asked Jul 27, 2013 at 14:45

1 vote

3 answers

1k views

Steering forces on a bicycle

newtonian-mechanics forces

asked Jul 29, 2013 at 15:38

1 vote

7 answers

2k views

Is a black hole bright in the center?

black-holes visible-light event-horizon singularities

asked Apr 9, 2013 at 16:37

1 vote

1 answer

155 views

What is the age of universe? [closed]

spacetime universe big-bang faster-than-light space-expansion

asked Mar 10, 2013 at 3:09

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43 Questions

Why aren't airplanes like golf balls?

Do mankind and manmade activities/constructions have any effect on the rotation of the Earth?

What happens to atoms inside a black hole?

Why do we need to find 5 Higgs Bosons to prove the existence of the dark matter?

Why are we not affected by the radiation of the radioactive decay going inside the Earth?

Why does the point of intersection of two shadows look brighter?

Why does tea rise in the pot but water doesn't?

Why do cold metal plate make less noise?

Can a black hole collapse in itself?

Difficulty in understading a part of the book "A Brief History of Time"?

Where do photons get their energy from?

Where do planets get energy to revolve around sun? [duplicate]

Why isn't all of the dust in a nebula used in the formation of a star?

What decides the velocity of a bullet coming out from the gun?

Will this type of engine produce thrust?

Life of a photon [duplicate]

Rotation of tennis ball getting reversed on striking the ground. Reason?

When is the speed specified for an object experiencing an exponential force?

Is it really possible to walk on water? [closed]

Is the speed of light the ultimate speed limit? [duplicate]

Where do electrons get the energy to remain in orbit? [duplicate]

A simple thermodynamic question? [closed]

Why can't we accelerate to the speed of light? [duplicate]

Why the CFL light bulb flashes even if there is a power cut?

Doubt in solving question related to photoelectric effect?

Magnification for a concave mirror

Do volcanic eruptions affect Earth's orbit?

Steering forces on a bicycle

Is a black hole bright in the center?

What is the age of universe? [closed]