Recent content by mapa

Hi, I am about to start school and I am majoring in Physics. I enjoy learning about it a lot and I want to continue to pursue it in college, but from what I hear is that there are not a lot of jobs out there with physics degrees. I've been talking to a few people who are engineers or have been...

Hi, I have been looking to finding the energy of an acoustic sound wave. I keep looking, but its not the exact equation I am looking for. I am look for an equation of how much energy is present in a sound wave and how it changes over distance. Does anyone know?

Thank You.

(Is there one?) What is the Earth's natural resonant frequency?

Hi, I wired a 24V battery --which were actually two 12V in series-- parallel with a 12V battery. The Voltage turned out to be about 18Volts when I measure the 12V Battery side. When I measured the 24V side, it turned out to be about 22.2Volts. What is going on? Why does the voltage...

Russ Watters. I think my confusion is how to get the frequency from the software. I do not know where you got 568Hz from. I did the trick your recommended right now and got results, but I do not know where to read the frequency?

Russ_waters, the way you recommended, I actually tried performing a few months ago, and it was very difficult to find the glasses resonant frequency. I spent several hours traversing slowly through different frequencies ranging from 0-20000hz. I concluded that my speakers were not loud enough...

I tried both suggestions. From what understand is that the computer automatically sets a frequency called the "sampling rate", in which there is a set rate at which the speaker will vibrate at. Does anyone have any other solutions?

Well, to put it to the basics, I am attempting to break glass with sound using a frequency generator I have on my laptop. I want to determine the frequency the object is vibrating.

Does anyone know a device that reads the frequency of objects? I want to be able to read the frequency of a glass plate and a sheet of aluminum. What is it called?

What does the "w" in this equation stand for? w = (epsilon_0)(E^2)

When I learn physics I like to visualize what is happening in my head. I can understand why this problem is multiplied by t^2; from my rational it is to get (m/s^2) just to meters. But why is this equation multiplied by one half? I do not understand why this happens. Can someone please...

RUSS WATTERS In a vacuum --such as space-- light travels in waves, but what is it bouncing off of? Do the waves itself, naturally bounce off each other?

Why does a wave go up and down? What forces cause waves to go up and down? In order for a particle to be a specific frequency would depend on what?

What is the acceleration of sound and what is the difference between acceleration and velocity? I was researching online the acceleration of sound but I found no answer. I want to calculate the force of sound using F=ma, but I could not figure out the acceleration of sound. Along with...