Physics/Expert Profile
Expertise
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.
Experience in the area
I have a BS in Physics and an MS in Electrical Engineering. I am retired now. My professional career was in Electrical Engineering with considerable time spent working with accelerometers, gyroscopes and flight dynamics (Physics related topics) while working on the Space Shuttle. I gave formal classroom lessons to technical co-workers periodically over a several year period.
Education/Credentials
BS Physics, North Dakota State University
MS Electrical Engineering, North Dakota State University
What do you like about this subject?
I went into Physics because it was the first material I both liked and understood in high school. I did well in my first year of college Physics, but the later years required higher math than my comfort level so after earning my BS degree in Physics, I switched into Engineering for my MS degree.
Average Ratings
Recent Reviews from Users
K = Knowledgeability C = Clarity of Response P = Politeness| User | Date | K | C | P | Comments |
|---|---|---|---|---|---|
| aliya | 02/08/12 | 10 | 10 | 10 | |
| Lasse | 01/31/12 | 10 | 10 | 10 | Clear, precise and easy to read answer ..... |
| Ann | 01/17/12 | 10 | 10 | 10 | I can't believe I was making a ..... |
| Garett | 01/16/12 | 10 | 10 | 10 | Sir thank you very much for your ..... |
| Ann | 01/15/12 | 10 | 10 | 10 | Wow, you're really good at this. Thanks! ..... |
Recent Answers from Steve Johnson
2012-02-06 expansion of liquids:
Hello aliya, Yes, it would be possible. The scale would be backwards from what we now have on a glass mercury thermometer. The column of mercury would seem to retract as the temperature increases, so
2012-02-04 Stationary waves:
Hello Vaishak, When you first studied freefall -- behavior of a dropped object, your analysis ignored the affect of wind resistance. After introduction of the basics, wind resistance and terminal velocity
2012-02-02 Electrostatics, Gauss' Law:
Hello Mihir, The question implies that the charge distribution is non-uniform, but doesn't give any details. It is not possible to answer, except in a very vague way, without some details. I'll specify
2012-01-31 physics:
Hello Lasse, An acceleration on impact of 1.842 g could be legitimate. It depends on additional details. That answer from 14 dec 2005 wasn't mine. I didn't start answering questions here until April
2012-01-29 Mass energy:
Hello again John, If we are still talking about the energy of Einstein's equation, then no, it is not the motion of the particles that are within the mass. The velocity in Einstein's equation is the
Answers by Expert:
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