User Level River St

30 votes

Where on Earth does the mass of 1 kg actually produce a 1 kg reading on a digital scale?

answered Nov 18, 2014 at 22:09

24 votes

Does quantum mechanics play a role in the brain?

answered Jan 10, 2016 at 20:15

22 votes

Accepted

Are internal combustion engines more efficient on cold days?

answered Jan 29, 2015 at 0:28

18 votes

Why can we only "see" reflected light?

answered Apr 9, 2017 at 23:00

14 votes

Why can't a gas be liquified by pressure above its critical temperature?

answered Jun 22, 2014 at 23:44

10 votes

Accepted

Does fire have an influence on the weight of a burning object?

answered Aug 16, 2015 at 20:54

9 votes

Blowing your own sail?

answered Sep 15, 2014 at 11:10

9 votes

Why are protons heavier than electrons?

answered May 8, 2017 at 18:45

9 votes

What can we deduce by the fact that mirrors cannot get a ray hotter than Sun's surface?

answered Sep 9, 2016 at 21:21

8 votes

Why don't choir voices destructively interfere so that we can't hear them?

answered Oct 25, 2015 at 20:21

8 votes

Push a Boeing 737 on ice: Did this guy have a chance?

answered Aug 27, 2015 at 16:02

7 votes

How does a neutron have more mass than a hydrogen atom's isotope (Specifically deuterium)?

answered Oct 5, 2015 at 10:35

5 votes

Accepted

How does resistance convert voltage to current?

answered Feb 25, 2019 at 0:26

5 votes

Does gravity reverse entropy?

answered Mar 31, 2021 at 20:52

5 votes

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

answered Jun 12, 2022 at 10:43

4 votes

Why aren't jet engines used in cars?

answered Nov 25, 2021 at 22:01

4 votes

Can a balloon be inflated with electrons?

answered Aug 25, 2016 at 21:44

4 votes

Why is boron so good at neutron absorption?

answered Oct 2, 2015 at 14:58

4 votes

How to emulate 40ft (12 m) of water?

answered Jul 1, 2015 at 14:39

3 votes

Can a human size object move so fast that it ceases to be observable?

answered Aug 23, 2014 at 23:26

3 votes

Is the work done walking up an escalator in the same speed and opposite direction of the escalator zero?

answered Feb 6, 2015 at 12:59

3 votes

In what case does a Coil with Current flowing through it NOT produce a Magnetic Field?

answered Oct 25, 2015 at 5:22

3 votes

Do solar systems typically spin in the same direction as their galaxy?

answered Sep 7, 2015 at 19:53

3 votes

A planet with a square orbit?

answered Feb 4, 2022 at 2:56

3 votes

If sound passes through material, vibration is produced. So are electromagnetic waves produced too?

answered Feb 16, 2020 at 13:47

2 votes

What is Pressure Energy?

answered Nov 3, 2015 at 14:22

2 votes

Why don't we hear sound reflecting from buildings, mirrors, etcetera?

answered Apr 5, 2016 at 21:26

2 votes

When blowing air through a tube, why does it act differently if I press the tube against my mouth, or hold it an inch away?

answered Sep 12, 2014 at 21:23

1 vote

Accepted

Most True to Life Physics & Biology Simulation Engine?

answered Mar 23, 2015 at 15:30

1 vote

What happens if a super fast rotating ball accelerates near speed of light?

answered Sep 23, 2015 at 22:20

Stack Exchange Network

37 Answers

Where on Earth does the mass of 1 kg actually produce a 1 kg reading on a digital scale?

Does quantum mechanics play a role in the brain?

Are internal combustion engines more efficient on cold days?

Why can we only "see" reflected light?

Why can't a gas be liquified by pressure above its critical temperature?

Does fire have an influence on the weight of a burning object?

Blowing your own sail?

Why are protons heavier than electrons?

What can we deduce by the fact that mirrors cannot get a ray hotter than Sun's surface?

Why don't choir voices destructively interfere so that we can't hear them?

Push a Boeing 737 on ice: Did this guy have a chance?

How does a neutron have more mass than a hydrogen atom's isotope (Specifically deuterium)?

How does resistance convert voltage to current?

Does gravity reverse entropy?

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

Why aren't jet engines used in cars?

Can a balloon be inflated with electrons?

Why is boron so good at neutron absorption?

How to emulate 40ft (12 m) of water?

Can a human size object move so fast that it ceases to be observable?

Is the work done walking up an escalator in the same speed and opposite direction of the escalator zero?

In what case does a Coil with Current flowing through it NOT produce a Magnetic Field?

Do solar systems typically spin in the same direction as their galaxy?

A planet with a square orbit?

If sound passes through material, vibration is produced. So are electromagnetic waves produced too?

What is Pressure Energy?

Why don't we hear sound reflecting from buildings, mirrors, etcetera?

When blowing air through a tube, why does it act differently if I press the tube against my mouth, or hold it an inch away?

Most True to Life Physics & Biology Simulation Engine?

What happens if a super fast rotating ball accelerates near speed of light?