Recent content by lafalfa

I don't think they'll expect me to do that (hopefully) since they just say to "indicate the approximate position on the circle [which they have drawn] with the letter I." So, I should be okay. Thanks!

Eight! I forgot to add those initial 4 points. Haha thanks so much for helping me out and for the quick replies!

There are four quadrants in a circle, so I would say there should only be four m=1 points, that is, one m=1 point between each m=0 and m=2 points. I don't understand why there should be TWO m=1 points in each of the four quadrants of the circle.

I see that by fitting two m=1 points between each m=0 and m=2 points, I would get a total of 8 intensity maxima positions, but I don't understand how we can assume that there are TWO instead of one m=1 points between an m=0 and an m=2 point.

Yes, and the points where m=2 are at (5,0) and (-5,0)?

How do I find the four points?

I think we're supposed to assume that they're emitting sound waves in phase and that the only phase difference arises from the path difference.

Perhaps I have the entire concept wrong and there's some other mysterious formula that I am supposed to use...?

The path difference is supposed to be the difference in distance that sound waves from each source must travel to get to you. So, for example, if you are 3 metres from a certain source and there is another source 1 metre directly behind the first source, the path difference would be 4-3=1...

Hi, Two speakers, A and B, are located at x = +0.5 m and x = -0.5 m. A 680 Hz signal is sent to both speakers. You then walk around the origin, x = 0, in a circle of radius 5.0 m. v_sound = 340 m/s If you walk once around the complete circle, how many intensity maxima do you hear...

Thank you! I hope the answer key is the one that's wrong.

Hi, A cylindrical log with volume 2.0m^3, length 4.0m and density 700 kg/m^3 is anchored to the sea floor by a light cable attached to one end, and with the long axis vertical. Density of sea water is 1030 kg/m^3. g=9.80 m/s^2. a) What is the buoyancy force acting on the wood? I did...

So when asked to order atoms/ions in terms of their size, would I immediately put all the negatively charged ions at one end, all the neutral atoms in the middle, and then all the positively charged ions at the other end, regardless of their relative positions on the periodic table?

But then how would I conclude that Cl- is larger than S? I have to be able to conclude this somehow since I have this question for school.

Hi, How would you determine the relative atomic sizes of a neutral atom and an ion? I can't figure this out. It can't be that all neutral atoms are always smaller than all ions can it? For example, how would I determine if Cl- is smaller or larger than S?. (The answer is that Cl- is...