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Site Links:
· Physics, Main Page
· Physics, Mathematics
· Mathematics, Main Page
· Physics, Detailed Homework Scope
· Physics Problems, Example
· Energy, Work and Power
· Kinetic Energy
· Potential Energy
· Power
· Physics Homework - Mechanical Energy Conservation Problems
· Physics Homework - Examples of Mechanical Energy Problems
· Coulomb's Law
· Exercises Using Coulomb's Law
· Electric Field Charges
· Electric Field Exercises
· Electric Potential Energy
· Exercises, Electric Potential Energy
· Ohm's Law, Principle
· Ohm's Law Exercises
· Gauss' Law
· Gauss' Law Exercises
· Probability Definitions
· Probability Sets · Second Newton's Law
· Second Newton's Law Examples, Part One
· Second Newton's Law Examples, Part Two
· Sound Waves
· Sound Waves: Standing, Interference, Doppler Effect - Examples
· Sound Waves, Doppler Effect - Examples
· Vectors, Scalars
· Vectors, Scalars - Analytic Method
· Addition Vector Tools, Problems
· Free Fall Theory
· Free Fall Exercises, Part One
· Free Fall Exercises, Part Two
· Free Fall Exercises, Part Three

           HOW TO PAY

The math and physics problems you send us will have a cost estimate that will be sent to you by email as soon as possible. You can negotiate with us upon that cost at your request.

You can pay with credit card or check via Internet or by Western Union if you prefer to pay without using the Internet.

The quickest and most economical way to pay is by Credit Card via Internet (PayPal) or as a PayPal member.

Pay: Pay With Paypal - Click here!

To pay by Western Union:


Use the above link to locate the Western Union location closest to you. The way to send the payment with them is to the name and address below, without using any bank service (otherwise there would be a number of days of delay). Western Union will give you a control number and you send that number to the email that is at the end of this site mentioning the name below (Sergio Fernandez Aedo). With that number the funds will be collected by him.

Western Union requires this information: Name: Sergio Fernandez Aedo Address: Nueve y Medio Norte 932 City: Vina del Mar Region: Quinta Region Country: Chile

You can ask for personalized help to send your payment to: