Since I am in the Band at school I was somewhat concerned about if the sound intensity would be too...

Jazz Band sound intensity]]>

I am in the middle of something and I would like to ask a question on how to solve this branch wheeled problem.

The yellow lines are the branches, they have one wheels on them and the wheels are on a...

Problem with wheels and arms.]]>

As far as I know, if the angle is 3°, the tension on the rope is g/ cos 3 and the horizontal T = 9,8 * tan 3 (0.0524) = 0.5 N. Is this the only force to consider?

Can you tell me how to...

Genesis of the pendulum formula]]>

I have am idea for Chinese sky lanterns:

A sky lantern that'll:

1.) Take off and fly at a steady pace without a flame

2.) Material will either eventually evaporate in the sky, or shrink down to the size of a quarter.

So, are either of these possible?

Input would he fantastic...

Need help in replacing flame with something else, along with]]>

Vibration Based Energy Harvesting]]>

Div-Curl system is overdetermination which has 3 unknowns and 4 equations.

[tex] div \,{\bf{E}}=\rho, \quad curl\, {\bf{E}}={\bf{S}}[/tex]

Compatibility condition must be satisfied [tex] div\, {\bf{S}}=0 [/tex]]]>

Why is vector addition defined the way it is?]]>

Here's what it looks like when you open a new application for Mac if you're not familiar....

The Highest Point for bouncing Mac Application Icons]]>

Confined Blast Wave propagation]]>

I wanted to try to answer this my self,...

Energy Conservation and Time-Dependent Potentials]]>

Would this be correct?

##B=\sqrt{B_1^2+B_2^2}##

##B_1=2R\sin(\theta / 2)##

##B_2=2R\sin(\phi / 2)##

Where:

R is the Earth's radius

θ and Φ are...

Calculating straight-line distance between cities]]>

Here, the rope is attached to a vertical cylinder and the particle is given a velocity...

Work done by tension]]>

It goes like: we guess that ##E_k\propto v^2## and we assume that momentum ##p\propto v##, then equation is valid in another inertial system. And so on. The...

Quadratic forms and kinetic energy]]>

Could you guys explain how the electric field can be explained with or without -∂A/∂t]]>

2: Voltage is the integral of E field with distance.

3: In a superconductor, or equivalently an with idealized wires having 0 resistance, there can't be any electric field inside. Thus, voltage in a superconductor should...

Why Faraday's law works with superconductors?]]>

when a a stone at the end of the string is rotated with a high speed so that the string is suspended making zero degrees with the plane of the ground, how do we analyze the system from the rotating frame.

View attachment 87972]]>

Can charge be held in a vacuum?]]>

Please give me simple and detailed...

What is major difference in motion in a straight line and motion in a plane.]]>

Microwave receiver]]>

Understanding centrifugal force]]>

Potential energy of a dipole]]>

2) voltage is the difference in electric potential energy between two nodes

How do you calculate the voltage in a vacuum?]]>

Decay time of waves in a swimming pool]]>

I watched this video and it seemed quite ludicrous to me. The man in the video measured sword speed (which I assumed was angular velocity) with mph.

He then continued to say that...

FFVII Cloud's Buster Sword Busted in Ludicrous Video]]>

Experimental derivation of magnetic force on a wire]]>

Efficiency of piezoelectric materials]]>

Thanks for help.]]>

Why an array of telescopes is used?]]>

v1i-v2i=-(v1f-v2f)

I want to know how that equation is derived.

Note: v1i is the initial velocity of the first mass

v2i is the initial velocity of the second mass...

How is v1i-v2i=-(v1f-v2f) Derived?]]>