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Physics/Experts

Expert	Average Ratings	Expertise
Expert Available View Profile Ask A Question View Past Answers	Knowledgeability 9.67 Clarity of Response 9.64 Timeliness 9.83 Politeness 9.74 Total Questions 3278	I can help with understanding physics that does not involve eggs. I will NOT help with academic or professional questions.
Richard J. Raridon U.S. Available View Profile Ask A Question View Past Answers	Knowledgeability 9.87 Clarity of Response 9.65 Timeliness 9.90 Politeness 9.92 Total Questions 3429	I can answer most questions in undergraduate physics courses, including electricity and magnetism, atomic and nuclear, mechanics and optics.
James J. Kovalcin U.S. Available View Profile Ask A Question View Past Answers	Knowledgeability 9.82 Clarity of Response 9.70 Timeliness 9.79 Politeness 9.88 Total Questions 2921	I am teaching or have taught AP physics B and C [calculus based mechanics & electricity and magnetism] as well as Lab Physics for college bound students. I have a BS in Physics from the University of Pittsburgh and a Master of Arts in Teaching from same. I have been teaching physics for 34 years. I am constantly updating my skills and have a particular interest in modern physics topics.
David Montiel Canada Available View Profile Ask A Question View Past Answers	Knowledgeability 9.87 Clarity of Response 10.0 Timeliness 10.0 Politeness 10.0 Total Questions 78	PLEASE READ THIS BEFORE POSTING YOUR QUESTION: While I am glad to offer HELP with problems, I refuse to SOLVE problems. There is a difference. Please do not just copy a question from a texbook or assignment. I WILL REJECT IT. I will only accept questions, if in addition to the statement of the problem, you describe in detail what you have tried so far in order to solve it, and what exactly is the problem you are encountering. In other words where/why are you stuck? I can answer general physics questions up to the level of first or second .....
Andrell Philippines Available View Profile Ask A Question View Past Answers	Knowledgeability 10.0 Clarity of Response 9.50 Timeliness 10.0 Politeness 10.0 Total Questions 72	I will only answer secondary (high school) physics questions. I am taking up BS Mechanical Engineering. And I will not answer your homework directly! It would be nice if you will work on your homework by yourself and just ask me of theories you might need. If I answer your homework you will most certainly depend on AllExperts.com for all the answers and that will make you futile.
Steve Nelson U.S. Available View Profile Ask A Question View Past Answers	Rating N/A (Expert Not Accept Rating) Total Questions 1480	I can answer most basic physics questions, physics questions about science fiction and everyday observations of physics, etc. I'm also usually good for science fair advice (I'm the regional science fair director). I do not answer homework problems. I will occasionally point out where a homework solution went wrong, though. I'm usually good at explaining odd observations that seem counterintuitive, energy science, nuclear physics, nuclear astrophysics, and alternative theories of physics are my specialties.
Steve Johnson Available View Profile Ask A Question View Past Answers	Knowledgeability 9.86 Clarity of Response 9.73 Timeliness 9.80 Politeness 9.98 Total Questions 1318	I would be delighted to help with questions up through the first year of college Physics. Particularly Electricity, Electronics and Newtonian Mechanics (motion, acceleration etc.). I decline questions on relativity and Atomic Physics. I also could discuss the Space Shuttle and space flight in general.
Suresh Chandra Benjamin India On Vacation returns 11/15/2009 View Profile View Past Answers	Knowledgeability 9.72 Clarity of Response 9.52 Timeliness 9.47 Politeness 9.93 Total Questions 543	I have taught Physics to 9 to 12 graders for more than twenty five years at a renowned public school in north India.My areas of interest are classical mechanics,fluid dynamics,static and current electricity,geometrical and wave optics,sound and modern physics.I would welcome questions in these areas from students of levels one through four.
Spaceman U.S. On Vacation returns 11/13/2009 View Profile View Past Answers	Knowledgeability 9.83 Clarity of Response 9.83 Timeliness 9.88 Politeness 9.98 Total Questions 1510	My scope of knowledge and experience includes inorganic chemistry, electronics, physics, and other subjects including government "Special Access Programs" work. I have worked in various research and development fields for over 26 years. Much of this work has been for large corporations.

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Recent Answers

2009-11-06 Speed:

Because this roller coaster is moving in a circular path Newton's 2nd Law applies: SF=m*a where SF is the sum of all the external forces acting on a system and where the acceleration is centripetal a=v^2/R

2009-11-06 Time Dilation with acceleration:

What you described above is essentially correct. HOWEVER, you left something out: namely, acceleration. Instead of two clocks on two trains, each train moving away from each other, let's have three clocks

2009-11-06 Sound uses molecules:

Sound consists of organized vibrations of molecules -- ie, particles with mass. These vibrations propogate at a few hundred kilometers per hour, as each group of molecules pass on their vibratons to the

2009-11-06 Speed of light:

The limit of light speed is its own speed in a vacuum. When it is different media (air, glass, water), it travels less than its vacuum speed. In a sense, it DOES travel faster in some media than in others

2009-11-05 Trigonometry:

1. 1/2 = 1-2(1/4) = 1/2 2. a. 12(1/2)-(6/2)(2^1/2) +(2^1/2)/52 = b. (3^1/2)/2 +1 -(3^1/2)/2 +2^1/2 = 1 +2^1/2 3. sin(x) = 4/5, tan(x) = 4/3 4. x/17 = 3/4 so x = 12.75, 17^2 = (12.75^2+y^2)^1/2 so