Recent content by mjsd
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Moment about a point using graph paper
As I said in my first post... 39(12/13)(1) should NOT be there as the (1) is actually (0)...can you see that? and 60(4/5)(3) is actually 60(4/5)(2) once you have got these you should get 95 Nm for your answers- mjsd
- Post #6
- Forum: Introductory Physics Homework Help
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Moment about a point using graph paper
firstly, I don't think 20(4) -39(5/surd 26(3)) +39(1/surd26)(1) -60(3/5)(1)+60(4/5)(3) would yield 80.9 The term 39(1/ Sqrt[26])(1) should not be there... 60 (4/5)(3) the (3) should be a (2) however with these adjustments, the answer is still not 95 Nm clockwise by my calculations (more like...- mjsd
- Post #3
- Forum: Introductory Physics Homework Help
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News 2015 Nobel Prize in Physics announcement
so glad to see this has finally happened. I was in my final years at high school when Super-K announced their results... and somehow I moved into the topic of neutrino models at uni- mjsd
- Post #19
- Forum: Other Physics Topics
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Relative velocity in inertial frame
velocity is a vector and has two components (e.g. v_x and v_y)- mjsd
- Post #2
- Forum: Introductory Physics Homework Help
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Graduate Are shell electrons accompanied by virtual neutrinos?
Z boson is the mediator for weak interactions. This is how electrons (or other leptons) can interact with neutrinos (which are otherwise neutral). Now, why "virtual particles" are in the mix of all this discussion confuses me. The only scenario where a virtual neutrino mediator may arise here...- mjsd
- Post #8
- Forum: Quantum Physics
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Graduate Are shell electrons accompanied by virtual neutrinos?
at high energy colliders, pair productions and annihilations are common phenomena, but this is unrelated to the "virtual particle pairs" mentioned (what ever this statement initially intended to mean?!).- mjsd
- Post #4
- Forum: Quantum Physics
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Sequences / Real Analyses question
perhaps starts by determining a and b in terms of k?- mjsd
- Post #2
- Forum: Calculus and Beyond Homework Help
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News Limbaugh - Leader of the Republican Party?
Limbaugh is a joke. hehehe... Steele got it right, Limbaugh is an entertainer, period. IF the Republican party wants a joker to be their leader or chief spokeman and to rally their base... well, here is an advice from Batman: if you play with fire, you will eventually get burnt. :smile: IF...- mjsd
- Post #10
- Forum: General Discussion
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High School Is 2009 Really the Year of Astronomy?
Thanks for the link.- mjsd
- Post #6
- Forum: Astronomy and Astrophysics
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High School Is 2009 Really the Year of Astronomy?
thanks for the comments. oh, is that why eh? ok... :smile: either way, should be a good opportunity for me to learn more about astro/cosmology...- mjsd
- Post #4
- Forum: Astronomy and Astrophysics
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Finding the nth Term of an Arithmetic Sequence
the way I have written it, d' is not actually d in the definition of: a_n = a_1 + d (n-1) so I put the "prime" or apostrophe on it. But the difference between two consecutive d' is the d we are after... write down the sequence and the progression and work out the differences between consecutive...- mjsd
- Post #4
- Forum: Precalculus Mathematics Homework Help
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High School Is 2009 Really the Year of Astronomy?
I heard that this year is the Year of Astronomy. Being a "physicist" at the university, a local science teacher invited me to help out with writing some talks/presentations for the students at their high school on the topics of astrophysics... So, why 2009? What is so special? What is going...- mjsd
- Thread
- Astronomy Year
- Replies: 5
- Forum: Astronomy and Astrophysics
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Finding the nth Term of an Arithmetic Sequence
d = 6, from {d'}_{n} = S_{n+1} - S_{n} and then evaluate d = {d'}_{n+1} - {d'}_n =6 and note that a_1 = S_1- mjsd
- Post #2
- Forum: Precalculus Mathematics Homework Help
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Solve Balancing Weights Homework: x Distance from Left End of Beam
Since the beam itself has a mass of 10.0 kg, shouldn't it also provide a torque as the rope is NOT connected to the middle of it. (the torque due to the force acting through the Centre of mass of the beam)- mjsd
- Post #2
- Forum: Introductory Physics Homework Help
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Is Science Just Another Form of Religion?
Since you have realized that "religion" may not be as black and white as you may hope it can be defined, it means that your original yes/no question on whether Science is a religion is kind of meaningless. you need a better definition of what you meant by "religion" first (as someone else has...- mjsd
- Post #26
- Forum: General Discussion