User pho

55 votes

Why does a helium filled balloon move forward in a car when the car is accelerating?

answered Nov 16, 2013 at 14:28

46 votes

Speed of sound at temperatures below 0 °C

answered Feb 11, 2014 at 3:07

39 votes

Accepted

Doesn't a box holding a vacuum weigh the same as a box full of air?

answered Dec 7, 2014 at 0:59

19 votes

Accepted

Celsius to Fahrenheit confusion: why there is no 1 to x ratio?

answered Nov 16, 2013 at 3:54

19 votes

Why is the moment of inertia (wrt. the center) for a hollow sphere higher than a solid sphere (with same radius and mass)?

answered Feb 23, 2014 at 15:38

17 votes

Accepted

Does light loses its energy when it passes through denser medium?

answered Sep 5, 2013 at 5:23

12 votes

Accepted

If you submerge a bottle of water in a boiling pot of water, why doesn't the water inside the bottle start to boil as well?

answered Jul 21, 2014 at 0:25

11 votes

Why the speed of light is represented by $c$?

answered Feb 10, 2014 at 5:16

8 votes

Accepted

How cold would a bowling ball near absolute zero make a room?

answered Sep 1, 2014 at 23:44

8 votes

Accepted

Treating expressions of the form $\vec x \cdot \nabla \vec y$: what is the order of operations?

answered Sep 1, 2020 at 19:32

7 votes

Accepted

Perfect elastic collision and velocity transfer

answered Oct 24, 2013 at 3:32

7 votes

If there were no space between nuclei, how big would the Earth be?

answered Nov 3, 2013 at 6:01

7 votes

Accepted

How do I predict volume loss due to evaporation when boiling water?

answered Jan 1, 2014 at 17:35

6 votes

What is the cause of centripetal/centrifugal force?

answered Feb 26, 2014 at 15:00

5 votes

Accepted

Why don't forces on two surfaces of a fluid need to balance?

answered Oct 28, 2014 at 4:55

5 votes

Burning VS Melting: What is the relation in the atomic/molecular structure?

answered Nov 16, 2013 at 21:33

4 votes

Why is steel-reinforced concrete stronger than ordinary concrete?

answered Sep 20, 2014 at 6:00

4 votes

Thermal Conductivity of Metals

answered Jul 8, 2014 at 8:31

4 votes

Does car lose kinetic energy when turning?

answered Feb 2, 2014 at 15:45

3 votes

Accepted

Which is smallest distance measurement which makes sense talking about

answered Feb 6, 2014 at 22:02

3 votes

Accepted

Which is stronger, wire rope or chain?

answered Jun 21, 2014 at 11:00

3 votes

Capacitance of two non parallel plates

answered Nov 23, 2014 at 8:05

3 votes

Does acceleration affect the pressure?

answered Feb 24, 2015 at 8:46

3 votes

$P\sin(\alpha)$ and not $\sin(\alpha)/P$?

answered Nov 1, 2013 at 9:25

3 votes

Does gravity affect radiation incident on the planet?

answered Sep 5, 2013 at 5:29

3 votes

Why current through all the resistors in series is considered to be same?

answered Oct 16, 2013 at 17:11

3 votes

Accepted

relationship between kinematics and area under curve

answered Oct 18, 2013 at 5:54

3 votes

Accepted

Negligible Mass of String

answered Oct 20, 2013 at 7:18

3 votes

How does a dehumidifier work?

answered Dec 2, 2013 at 2:23

3 votes

How can I explain this fallacy of conveying information faster than Light?

answered Dec 5, 2013 at 22:39

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82 Answers

Why does a helium filled balloon move forward in a car when the car is accelerating?

Speed of sound at temperatures below 0 °C

Doesn't a box holding a vacuum weigh the same as a box full of air?

Celsius to Fahrenheit confusion: why there is no 1 to x ratio?

Why is the moment of inertia (wrt. the center) for a hollow sphere higher than a solid sphere (with same radius and mass)?

Does light loses its energy when it passes through denser medium?

If you submerge a bottle of water in a boiling pot of water, why doesn't the water inside the bottle start to boil as well?

Why the speed of light is represented by $c$?

How cold would a bowling ball near absolute zero make a room?

Treating expressions of the form $\vec x \cdot \nabla \vec y$: what is the order of operations?

Perfect elastic collision and velocity transfer

If there were no space between nuclei, how big would the Earth be?

How do I predict volume loss due to evaporation when boiling water?

What is the cause of centripetal/centrifugal force?

Why don't forces on two surfaces of a fluid need to balance?

Burning VS Melting: What is the relation in the atomic/molecular structure?

Why is steel-reinforced concrete stronger than ordinary concrete?

Thermal Conductivity of Metals

Does car lose kinetic energy when turning?

Which is smallest distance measurement which makes sense talking about

Which is stronger, wire rope or chain?

Capacitance of two non parallel plates

Does acceleration affect the pressure?

$P\sin(\alpha)$ and not $\sin(\alpha)/P$?

Does gravity affect radiation incident on the planet?

Why current through all the resistors in series is considered to be same?

relationship between kinematics and area under curve

Negligible Mass of String

How does a dehumidifier work?

How can I explain this fallacy of conveying information faster than Light?