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Steve Johnson

On Vacation
returns 04/10/2017

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.


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.

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Recent Reviews from Users

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Prashant S Akerkar 03/22/17101010Dear Prof Steve Thanks. Prashant
Prashant S Akerkar03/19/17101010Dear Prof Steve Thanks. Prashant
Prashant S Akerkar 03/19/17101010Dear Prof Steve Thanks. Prashant
Birol03/16/17101010Hello Steve, Thank your very much for .....
Prashant S Akerkar03/14/17101010Dear Prof Steve Thanks. Prashant

Recent Answers from Steve Johnson

2017-03-21 Luminous intensity of Chandelier.:

Hello Prashant,    Yes, we can. I do not know if it is typically done. It would be (or perhaps is) difficult. The Chandelier would have to be surrounded with instrumentation. Enough sample measurements

2017-03-18 Equilibrium.:

Hello Prashant,    1. Equilibrium is a state, or condition. Therefore it would not have units. It is defined as a state in which the net force is zero and the net torque is zero.    2. Since it is not

2017-03-12 Simple Harmonic Motion:

Hello Prashant,    This website  says that the formula y = Asin(((k/m)^0.5)t) contains a complete description of the motion (SHM), and other parameters

2017-03-10 Viscosity in Gases.:

Hello Prashant,    1. Yes. The first reliable measurement was performed by James Clerk Maxwell and his wife in their attic and was reported in 1866.

2017-03-03 Loudspeakers Geometrical Shapes.:

Hello Prashant,    Check these sites:


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