User lucas

40 votes

4 answers

10k views

Why is the efficiency of human cells less than the efficiency of an Otto engine?

asked Jun 29, 2016 at 6:57

11 votes

2 answers

211 views

Can one rise through a free-falling rope?

asked Jul 19, 2016 at 16:10

9 votes

3 answers

5k views

Is there strong interaction between electrons?

asked Jul 4, 2016 at 3:59

7 votes

2 answers

895 views

Which temperature does $T$ in Clausius inequality ($\oint \frac{\delta Q}T\le 0$) refer to?

asked Jul 22, 2016 at 15:36

6 votes

2 answers

4k views

Why do we use orthogonal axes?

asked Jun 14, 2016 at 10:54

5 votes

4 answers

1k views

Was there physics science before invention of calculus?

asked Jul 6, 2016 at 5:14

4 votes

1 answer

279 views

Electrons motion

asked May 24, 2016 at 13:09

4 votes

3 answers

16k views

Why do we hear better during the night? [duplicate]

asked Jun 23, 2016 at 20:35

4 votes

3 answers

2k views

Is there any effect on mechanical waves by electromagnetic waves (and vise versa)?

asked Jun 24, 2016 at 9:01

4 votes

3 answers

1k views

Physical explanation of Pascal’s Law

asked Apr 28, 2016 at 9:06

4 votes

4 answers

223 views

What is the difference between $x\rightarrow 0$ and $x\ll 1$?

asked Feb 27, 2017 at 20:42

2 votes

2 answers

1k views

What is the difference between damping and elasticity forces?

asked Mar 2, 2017 at 17:46

2 votes

1 answer

569 views

Will fracture occur under very high hydrostatic pressure?

asked Mar 6, 2017 at 9:00

2 votes

1 answer

1k views

What does 'orientation-preserving' mean?

asked Mar 17, 2017 at 9:07

2 votes

2 answers

251 views

May a point rotate about itself?

asked Apr 21, 2016 at 17:43

2 votes

2 answers

2k views

Why do we not see stars during the day?

asked Jul 5, 2016 at 3:37

1 vote

1 answer

899 views

Dalton's law of additive pressures

asked Apr 8, 2016 at 9:38

1 vote

2 answers

218 views

Will there be friction?

asked Jul 7, 2016 at 9:29

1 vote

0 answers

141 views

Why does the clock work slowly at higher speed? [duplicate]

asked Jul 7, 2016 at 13:50

1 vote

3 answers

3k views

Evaporation of water

asked May 9, 2016 at 21:57

1 vote

1 answer

94 views

Why does length of objects seem different in different configurations of object and observer?

asked Jun 27, 2016 at 13:07

1 vote

0 answers

57 views

Are all kinds of energy quantized? [duplicate]

asked Jul 25, 2016 at 16:29

1 vote

2 answers

121 views

Why do stresses not change by a virtual displacement?

asked Jan 8, 2017 at 17:40

1 vote

3 answers

404 views

Why infinitesimally close?

asked Feb 23, 2017 at 18:17

0 votes

3 answers

327 views

Is work done defined for a state? [duplicate]

asked Mar 28, 2017 at 8:29

0 votes

0 answers

100 views

Can we move our arm in a perfectly friction-less world?

asked Jul 15, 2016 at 6:03

0 votes

3 answers

150 views

Can we have a physics by using other mathematics except calculus? [closed]

asked Jul 7, 2016 at 3:01

-3 votes

1 answer

131 views

Injectivity of Physical Functions

asked Apr 26, 2016 at 15:39

-3 votes

3 answers

728 views

About time and time dilation [closed]

asked Jul 10, 2016 at 9:36

-12 votes

3 answers

2k views

Do we not need a Zeroth Law of motion similar to the Zeroth Law of Thermodynamics? [closed]

asked Jul 8, 2016 at 6:00

Stack Exchange Network

30 Questions

Why is the efficiency of human cells less than the efficiency of an Otto engine?

Can one rise through a free-falling rope?

Is there strong interaction between electrons?

Which temperature does $T$ in Clausius inequality ($\oint \frac{\delta Q}T\le 0$) refer to?

Why do we use orthogonal axes?

Was there physics science before invention of calculus?

Electrons motion

Why do we hear better during the night? [duplicate]

Is there any effect on mechanical waves by electromagnetic waves (and vise versa)?

Physical explanation of Pascal’s Law

What is the difference between $x\rightarrow 0$ and $x\ll 1$?

What is the difference between damping and elasticity forces?

Will fracture occur under very high hydrostatic pressure?

What does 'orientation-preserving' mean?

May a point rotate about itself?

Why do we not see stars during the day?

Dalton's law of additive pressures

Will there be friction?

Why does the clock work slowly at higher speed? [duplicate]

Evaporation of water

Why does length of objects seem different in different configurations of object and observer?

Are all kinds of energy quantized? [duplicate]

Why do stresses not change by a virtual displacement?

Why infinitesimally close?

Is work done defined for a state? [duplicate]

Can we move our arm in a perfectly friction-less world?

Can we have a physics by using other mathematics except calculus? [closed]

Injectivity of Physical Functions

About time and time dilation [closed]

Do we not need a Zeroth Law of motion similar to the Zeroth Law of Thermodynamics? [closed]