Recent content by robotpie3000

I think the names given to the days of the week are just assigned by us humans and really has no physical significance, but I could be wrong.

You are right there was something wrong with the use of the -2 x 10-6C. The equation should be E=k[((5x10-6)/0.362)+((2x10-6)/0.142)], because we are finding the magnitude of the electric field, so the plus and minus signs doesn't matter.

So I've been thinking about this for a while and I think I've found the answer. There are three regions: [FONT=Georgia][-L, -x],[-x, x] [FONT=Arial]and[FONT=Georgia] [x, L]. [FONT=Arial]So the length of each region would be [FONT=Georgia]L-x, 2x[FONT=Arial] and [FONT=Georgia]L-x[FONT=Arial]...

Homework Statement I have just started my undergraduate quantum mechanics lectures and I am currently stuck in this question: A rigid-walled box that extends from [FONT=Georgia]-L to [FONT=Georgia]L is divided into three sections by rigid interior walls at [FONT=Georgia]-x to...

Ah thanks for that correction. So when a particle and its associated antiparticle collide and annihilate, only the "lost" mass is converted into energy, and the rest into the other forms you mentioned?

Remember that before you can apply L'Hospital's rule you must convert the function into a 0/0 or ∞/∞ form.

But matter is destroyed, its converted into energy via [FONT=Georgia]E=mc2 [FONT=Arial]right? Just like what others said, it depends on the law of conservation of what. The law of conservation of charge holds because the particle-antiparticle pair have the same charge magnitudes but with...

Here is my strategy to solve this question, forgive me if it is wrong: 1) Draw a diagram of the situation (its good that you did it) [FONT=Arial]2) Find the vertical component of the velocity [FONT=Georgia]vy [FONT=Arial]using basic trigonometry 3) Then find the vertical height (clues: consider...

Perhaps if its possible, you can go to other professors lectures, or watch some lectures online?

I am sort of in the same boat as you. I am currently taking a (compulsory) course in Modern Physics (ie. special relativity, quantum mechanics, w,ave properties of particles, particle properties of waves etc) of which I find the said topics relatively interesting (although I dislike special...

Is it to choose a filament whose metal has a very high melting point and/or simply make the lightbulb dimmer?

I just finished an experiment on blackbody radiation, and one of the post lab questions asked me on the possible ways in which a light bulb can be made more efficient such that the majority of the light it produces falls in the visible spectrum. After some quick research I think one of the...

I saw the eclipse from the balcony of my university atrium. It was quite cloudy but I could still see the reddish hue piercing through. It was my first proper experience of an eclipse and I was happy to be able to witness it, even if it was just for 10 minutes or so.

Hello everybody! My name is robotpie3000 and I am an Undergraduate Physics major in my 2nd year of study. I come here so that I can discuss physics related topics with you guys, get some help with potential homework and exam questions, and also help others if they are stuck.