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Physics/Expert Profile

Richard J. Raridon

U.S.

Available

Expertise

I can answer most questions in undergraduate physics courses, including electricity and magnetism, atomic and nuclear, mechanics and optics.

Experience in the area

I have taught undergraduate physics courses

Organizations

Sigma Xi, AAAS, SE section of APS

Education/Credentials

BA in math, MA in physics, PhD in physical chemistry

Awards and Honors

Fellow of AAAS

Average Ratings

Recent Reviews from Users

User	Date	K	C	P	Comments
ali	02/11/12	8	7	8	Thankyou.
eric	01/24/12	10	8	10
Elena	01/12/12	8	6	10	I don't understand the diagram of these .....
Xarhait	01/08/12	10	8	10
owais	12/31/11	10	10	10	thankyousir.you are great

Recent Answers from Richard J. Raridon

2012-02-11 Helium:

I worked on the fusion project here in Oak Ridge for about a dozen years, starting in 1985. Since it's at least 30 years before a fusion reactor produces electricity, it's a bit premature to talk about

2012-01-28 Mass energy:

Einstein's equation does not say E = (1/2)mv^2 (kinetic energyc. That dates back to Newton. Einstein stated that mass and energy are interchangable, E = mc^2. In the atomic bomb, mass was converted

2012-01-22 Phsyics Exam:

1. Period T = 1/f 2. It depends upon the medium 3. A. 1.8m, B. 0.675m/s C. 0.375/s D. 2.67s 5. A. 1.35m, B. 450m/s, C. 333/s, D. 0.003s 6. T = 0.159s, f = 6.3/s 7. T = 2.78s, f = 0.36/s 8. speed

2012-01-19 free fall impact:

You can calculate the momentum of the load as it hits which is mv = (7256kg)(4.427m/s) = 32124 kgm/s. That's equal to impulse which is equal to Ft = force times time. So it's hard to calculate impact

2012-01-13 Mechanical Advantage of a specific pulley system:

You are correct. I hadn't thought about pulleys for awhile. The theoretical mechanical advantage is calculated as I stated, using the distances involved. The actual MA will be less because of friction

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