I am wondering how should I perceive the occurence of a force, at least while reading an introductory university physic textbook. When I try to think about basic vacuum environment examples of an object receiving a push, I always arrive at the dilema of...

How to perceive a force in introductory context]]>

Capstan law is T2=T1e^μθ.

I have problem identifying T1 and T2 in various situations:

1) when the capstan is not rotating

2) when the capstan is rotating

how can I identify which side is T1 and which T2?

thanks!]]>

degree of freedom of water molecules.

Which got me thinking.

Why can't I kill the ice cubes > (in a Microwave Oven)]]>

I get that increased temperature increases pressure. But does increased pressure increase temperature. For example: 1) If I press down on a table with a heavy object, does it increase its temperature. 2) Or does the pressure of the crust and the mantle of the Earth, contribute...

Pressure and temperature -- the effects of one upon the other]]>

My question is what are the necessary setups?

I know that I would need a strong magnet like neodymium magnet. But, i have no idea about the formula. Lets say i...

Magnetic Levitation Formula]]>

Does light always travel at light speed?]]>

This might be a dum idea but here goes.

Say you have 3 items. One weak magnet and two ferromagnetic materials of different susceptability.

The magnet is strong enough to saturate the first material bot not the second. But since the saturated field in the first material is larger than that...

Ferromagnetism - thought problem]]>

Velocity of a turkey]]>

"Whether the current is a movement of positive particles, negative particles in the opposite direction, or a mixture of the two, a perpendicular magnetic field displaces...

How is Fleming's left hand rule applied in Hall effect]]>

Amplitude modulation]]>

Magnetic Flux in a Coaxial Cable]]>

When...

When a charged object is brought close to an uncharged one (attraction)]]>

On the context of Maxwell's Demon, it's accepted that Landauer's principle (the erasure of a bit of information requires kTln2 of work) gives a solution to the paradox. The erasure of a bit of information can be seen as the modulation of a double well potential, as in the right side of the...

Measurement without energy cost?]]>

I have a setup that I am showing in the attached file but here are more details:

-I have a vacuum chamber pumped with a turbo pump to...

Calculating gas flow trough a pipe and a nozzle]]>

Gravity Thought Problem]]>

Should not angle between vector P and Q be 180-θ rather than θ? According to my book it is θ.]]>

IF you could travel faster than light, would time cease or]]>

Does the Coriolis Effect Occur When Wind Moves Horizontally?]]>

And the photons of light...

Few questions on light interacting with atoms]]>

Gravity assist and increasing orbital energy]]>

Then $$i(t)=\frac{V(t)}{Z}=\frac{V_0e^{i\omega t}}{R+i\left(\frac{1}{\omega C}-\omega L\right)}$$...

RLC circuit analysis]]>

Magnetism, electricity, and photons]]>

I photographed our television with the flash on in order to recreate a strange patter i saw when looking at the suns reflection in the screen.(with my eyes it's not just the camera)

You can...

Strange Optical Phenomenon (diffraction or something else?) (solved)]]>

In high school, we usually take examples where the object is placed in an incline and the Normal force is equal to mg cos theta where theta is the angle of the incline. It should equal to that...

Normal forces question]]>

Assuming the system follows Maxwell's equations, what must both fields satisfy such that

##∇⋅(\frac{∂B}{∂t})=0## ?]]>

I'm new to the physics community and completely useless in the subject area, however I am extremely interested in physics.

After turning off the television just now I noticed something odd.

There is a big mirror behind the bed, and the television is on the wall in front....

Strange Light Phenomenon]]>

Inverse Square Law, Temperature Change, and Heat Source Temp]]>

you do this simple math and you get an number that is in KE units , Joules.

so, why is the KE unit equation, 1 Joule = Kg x (m^2/s^2) ??

1Kg traveling at 1m/s would have a KE of 1Joule, but using the KE equation, it would be 1/2 a Joule.

why is...

Physics 101 refresher question -- Confused about the definition of a Joule]]>

What causes light to bend in refraction]]>

Obnoxious vehicle speakers]]>

transformer lamination thickness calculation]]>