Recent content by sssddd
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Undergrad Need to understand about the photoelectric effect
ok sounds like I'm on the right track. Just a little more, if frequency is constant. Increase in intensity the same as increase in power will eject more electrons. How does that work, more energy per length of time is distributed over each electrons, so more electrons ejected right. Now how...- sssddd
- Post #3
- Forum: Electromagnetism
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Undergrad Need to understand about the photoelectric effect
Hello my question involves what exactly is the frequency and intensity of the light. The E = hf applies to the photon particle aspect of light right? So where is f from, the wave aspect? Also increase f, which increases E makes the electrons eject faster in terms of kinetic energy right, but...- sssddd
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- Photoelectric Photoelectric effect
- Replies: 3
- Forum: Electromagnetism
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Another geo problem. I just need to make sure if i am on the right track
http://img47.imageshack.us/img47/4519/geo23mo.jpg It's an equliteral triangle I'm suppose to find the area of the shaded region. first of all are the chords of each those regions half 5cm? Should I find the areas of the sectors and then subtract the areas of the triangles? Please...- sssddd
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- Track
- Replies: 2
- Forum: Precalculus Mathematics Homework Help
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Length of the rope around two circles
if i do use triangles, what length do i use, the radii and what else, i am almost there. and my nephew hasnt taken trig yet, not sure if i can be any of help if i explain to him.- sssddd
- Post #6
- Forum: Precalculus Mathematics Homework Help
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Length of the rope around two circles
http://www.olemiss.edu/mathed/geometry/tight.gif To determine the shortest rope that can be wrapped around the two circles any ideas? i have forgotten everything about geometry. My nephew asked me this- sssddd
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- Circles Length Rope
- Replies: 6
- Forum: Precalculus Mathematics Homework Help
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What Is the Incident Angle for the First Null in a Diffraction Pattern?
ok thank you so much now i can find the angle easily- sssddd
- Post #7
- Forum: Introductory Physics Homework Help
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What Is the Incident Angle for the First Null in a Diffraction Pattern?
ok ok i think i am remembering this now, and m would be 1 right for first null. when they say null they mean the minima fully destructive right- sssddd
- Post #5
- Forum: Introductory Physics Homework Help
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What Is the Incident Angle for the First Null in a Diffraction Pattern?
it's the one with the sin theta right or something right? please point me to the right track- sssddd
- Post #3
- Forum: Introductory Physics Homework Help
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What Is the Incident Angle for the First Null in a Diffraction Pattern?
the question is A plane wave of 400-nm light is incident on a 25-µm slit in a screen, as shown in the figure below. At what incident angle will the first null of the diffraction pattern be on a line perpendicular to the screen?http://img130.imageshack.us/img130/9766/inter9ax.jpg I really do...- sssddd
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- Homework Interference Light Light interference
- Replies: 7
- Forum: Introductory Physics Homework Help
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Did Neanderthal genetics play a role in the evolution of modern humans?
So what's the verdict today? Was there just not enough DNA samples to construct an accurate phylogenic tree, so we still use the fossils to do it?- sssddd
- Post #9
- Forum: Biology and Medical
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Maple Why don't untapped maple trees explode?
is this even the right place ask this kind of question.- sssddd
- Post #4
- Forum: MATLAB, Maple, Mathematica, LaTeX
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Can hybridization lead to successful survival of animals with modified genes?
ask her again, and post it here. Oh by the way what is her background?- sssddd
- Post #23
- Forum: Biology and Medical
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Can hybridization lead to successful survival of animals with modified genes?
No, not the photoshop. You said your friend talked about hybrid animals. I want to know what is he talking about, or was he just joking around.- sssddd
- Post #21
- Forum: Biology and Medical
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Can hybridization lead to successful survival of animals with modified genes?
At this moment I would really like to know what hybrid animals are you taling about? Needbioinfo, who are the people that are doing this? Where were these experiments conducted?- sssddd
- Post #17
- Forum: Biology and Medical
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What is This Microscopic Creature from My Fish Tank?
ok ok sorry now I see the flagella. Could you tell me the magnification.- sssddd
- Post #7
- Forum: Biology and Medical