User John Darby

40 votes

Accepted

Does Newtonian mechanics work in polar coordinates?

answered Dec 23, 2021 at 18:44

40 votes

Why is it impossible for the reactor of the nuclear power plant to turn into an explosive nuclear bomb?

answered May 26, 2022 at 13:12

23 votes

Why is water a good neutron absorber?

answered Jan 8 at 14:13

21 votes

Accepted

Where does the law of conservation of momentum apply?

answered Jan 7, 2021 at 17:40

16 votes

Can heat(?) flow from a cold object to hot object?

answered Aug 15, 2022 at 11:56

14 votes

Why is the concept of torque necessary?

answered Nov 24, 2021 at 19:09

13 votes

What Fundamental Force do applied forces (kicking a ball, pushing an object) fall under?

answered Oct 9, 2022 at 20:56

12 votes

Accepted

If displacement is 0, does that mean initial velocity equals final velocity?

answered Feb 1, 2021 at 21:53

10 votes

Does an open or a closed cage of canaries weigh less when they are in flight?

answered Dec 31, 2022 at 19:34

10 votes

Why is there a maximum humidity?

answered Jan 14 at 2:00

10 votes

Can there be acceleration without work?

answered Jan 26 at 9:09

10 votes

Why are nuclear fusion reactors difficult?

answered Mar 20 at 15:16

9 votes

Accepted

A rolling stone on a rollercoaster

answered Nov 16, 2021 at 21:16

9 votes

If two unlike forces act on two different points of a rigid body, won't the body just start to rotate?

answered Mar 7, 2022 at 16:08

8 votes

Is projectile motion an approximation?

answered Feb 2, 2021 at 15:08

7 votes

Nuclear beta decay to hydrogen

answered Dec 12, 2020 at 4:07

7 votes

Why resistance increase in a series connection and decrease in a parallel connection?

answered Mar 31 at 18:25

7 votes

Why do we say that gravity did work on an object to give it velocity, when it already had that energy as a potential?

answered Dec 27, 2022 at 3:17

7 votes

Moment of inertia of 1/4 of a sphere

answered Jan 5, 2021 at 22:44

6 votes

Accepted

Why is the work done non-zero even though it's along a closed path?

answered Apr 6 at 1:59

6 votes

How can a system have kinetic energy if the centre of mass of the system is stationary?

answered Jan 13 at 18:36

6 votes

Is there a name for this phenomena that I observed?

answered Dec 27, 2022 at 3:32

6 votes

Is special relativity relevant to understand nuclear bombs?

answered Apr 23, 2022 at 0:38

5 votes

Where is (mechanical) energy conserved?

answered Apr 11, 2022 at 13:15

5 votes

Accepted

Is temperature everywhere continuous?

answered Dec 31, 2022 at 19:00

5 votes

Does work-energy theorem account for thermal energy?

answered Feb 13 at 16:43

5 votes

Why a fan make us feel colder instead of warmer in a cold room?

answered Nov 29, 2020 at 20:21

4 votes

What are the other ways of energy transfer apart from heat and work?

answered Jan 28, 2022 at 21:43

4 votes

Can spinning arms really help you balance on the edge of a cliff?

answered Dec 31, 2022 at 20:20

4 votes

Why do we write force = mass × acceleration?

answered Jan 1 at 16:00

Stack Exchange Network

576 Answers

Does Newtonian mechanics work in polar coordinates?

Why is it impossible for the reactor of the nuclear power plant to turn into an explosive nuclear bomb?

Why is water a good neutron absorber?

Where does the law of conservation of momentum apply?

Can heat(?) flow from a cold object to hot object?

Why is the concept of torque necessary?

What Fundamental Force do applied forces (kicking a ball, pushing an object) fall under?

If displacement is 0, does that mean initial velocity equals final velocity?

Does an open or a closed cage of canaries weigh less when they are in flight?

Why is there a maximum humidity?

Can there be acceleration without work?

Why are nuclear fusion reactors difficult?

A rolling stone on a rollercoaster

If two unlike forces act on two different points of a rigid body, won't the body just start to rotate?

Is projectile motion an approximation?

Nuclear beta decay to hydrogen

Why resistance increase in a series connection and decrease in a parallel connection?

Why do we say that gravity did work on an object to give it velocity, when it already had that energy as a potential?

Moment of inertia of 1/4 of a sphere

Why is the work done non-zero even though it's along a closed path?

How can a system have kinetic energy if the centre of mass of the system is stationary?

Is there a name for this phenomena that I observed?

Is special relativity relevant to understand nuclear bombs?

Where is (mechanical) energy conserved?

Is temperature everywhere continuous?

Does work-energy theorem account for thermal energy?

Why a fan make us feel colder instead of warmer in a cold room?

What are the other ways of energy transfer apart from heat and work?

Can spinning arms really help you balance on the edge of a cliff?

Why do we write force = mass × acceleration?