User Kenshin

64 votes

Accepted

Why does ice melting not change the water level in a container?

answered Apr 30, 2014 at 14:35

23 votes

Accepted

What made Bohr quantise angular momentum and not some other quantity?

quantum-mechanics angular-momentum orbital-motion electrons hydrogen

answered Nov 14, 2013 at 14:24

17 votes

Paradox- Object thrown parallel to the ground will never fall down

homework-and-exercises gravity newtonian-gravity work

answered Jan 29, 2013 at 4:42

13 votes

Confused over complex representation of the wave

quantum-mechanics waves wavefunction complex-numbers

answered Feb 11, 2013 at 10:16

11 votes

Accepted

Thermodynamics - Sign convention

thermodynamics work conventions volume

answered Sep 21, 2012 at 7:25

9 votes

Accepted

Is there an intuitive explanation for the Southward force caused by the Coriolis Effect on rotating spheres?

newtonian-mechanics reference-frames projectile education coriolis-effect

answered Jan 30, 2013 at 0:04

8 votes

Accepted

Radiance equation

radiometry

answered Feb 3, 2013 at 14:35

7 votes

What is the evidence for the existence of gravity

gravity kinematics

answered Nov 25, 2016 at 11:18

6 votes

Accepted

Conical Pendulum -- Can it rotate at 90 degrees?

newtonian-mechanics experimental-physics

answered Mar 11, 2013 at 1:26

5 votes

Accepted

Constant Velocity 'Force'?

newtonian-mechanics

answered Nov 15, 2013 at 6:17

5 votes

Accepted

How does $p_x$ commute with $p_y$, i.e. $[p_x,p_y]=0$?

quantum-mechanics homework-and-exercises operators momentum commutator

answered Apr 30, 2014 at 6:47

5 votes

Accepted

How to get "complex exponential" form of wave equation out of "sinusoidal form"?

homework-and-exercises waves complex-numbers linear-systems

answered Feb 4, 2013 at 11:32

5 votes

Accepted

Gravity force strength in 1D, 2D, 3D and higher spatial dimensions

electromagnetism forces newtonian-gravity gauss-law coulombs-law

answered Jan 30, 2013 at 0:52

5 votes

If $L$ is a matrix that represents real physical quantity, why is $L^2$ non-negative real physical quantity?

quantum-mechanics observables

answered Sep 27, 2012 at 12:25

5 votes

Measure absolute speed

special-relativity speed-of-light relative-motion

answered Sep 20, 2012 at 1:30

4 votes

Damping a spring force

newtonian-mechanics friction simulations spring numerical-method

answered Jun 27, 2015 at 10:27

4 votes

Can pure mathematics alone give proofs in science

mathematics laws-of-physics

answered Jul 4, 2015 at 15:04

4 votes

Accepted

Thermal expansion coefficient of water

water

answered Mar 12, 2013 at 14:37

4 votes

Accepted

Example of situation with conduction, convection, and radiation

thermodynamics

answered Apr 27, 2013 at 8:42

4 votes

Accepted

Basic vector addition problem

homework-and-exercises vectors error-analysis

answered Oct 25, 2013 at 22:50

3 votes

Calculate the electric potential energy stored in a capacitor

energy capacitance

answered Nov 14, 2013 at 5:13

3 votes

Accepted

Why do sand dunes, hills and mountains assume the shape they normally do?

gravity friction

answered Oct 6, 2013 at 16:24

3 votes

Accepted

Derivative of kinetic energy

homework-and-exercises newtonian-mechanics energy work differentiation

answered Jun 29, 2015 at 13:42

3 votes

Electric field scalar quantiy or vector quantity

electrostatics

answered Jun 28, 2015 at 11:33

3 votes

Accepted

Calculating car's acceleration from change in angle of hanging object?

homework-and-exercises forces kinematics acceleration velocity

answered Oct 5, 2012 at 12:57

3 votes

Show the Lorentz Transformation Matrices Have an Inverse

special-relativity linear-algebra

answered Sep 21, 2012 at 12:25

3 votes

How do electrons repel?

electricity electrostatics

answered Sep 27, 2012 at 6:57

3 votes

How exactly does mass affect speed?

newtonian-mechanics forces mass speed

answered Jan 29, 2013 at 13:47

3 votes

Contact force betweeen 2 objects

newtonian-mechanics forces

answered Jan 30, 2013 at 8:55

3 votes

Is the induced electric field due to time varying magnetic flux always circular?

electromagnetism maxwell-equations

answered Feb 1, 2013 at 4:23

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89 Answers

Why does ice melting not change the water level in a container?

What made Bohr quantise angular momentum and not some other quantity?

Paradox- Object thrown parallel to the ground will never fall down

Confused over complex representation of the wave

Thermodynamics - Sign convention

Is there an intuitive explanation for the Southward force caused by the Coriolis Effect on rotating spheres?

Radiance equation

What is the evidence for the existence of gravity

Conical Pendulum -- Can it rotate at 90 degrees?

Constant Velocity 'Force'?

How does $p_x$ commute with $p_y$, i.e. $[p_x,p_y]=0$?

How to get "complex exponential" form of wave equation out of "sinusoidal form"?

Gravity force strength in 1D, 2D, 3D and higher spatial dimensions

If $L$ is a matrix that represents real physical quantity, why is $L^2$ non-negative real physical quantity?

Measure absolute speed

Damping a spring force

Can pure mathematics alone give proofs in science

Thermal expansion coefficient of water

Example of situation with conduction, convection, and radiation

Basic vector addition problem

Calculate the electric potential energy stored in a capacitor

Why do sand dunes, hills and mountains assume the shape they normally do?

Derivative of kinetic energy

Electric field scalar quantiy or vector quantity

Calculating car's acceleration from change in angle of hanging object?

Show the Lorentz Transformation Matrices Have an Inverse

How do electrons repel?

How exactly does mass affect speed?

Contact force betweeen 2 objects

Is the induced electric field due to time varying magnetic flux always circular?