DrOfEng

This AP Physics C (Mechanics) video covers a worked example on vertical circular motion. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Computer Science A video covers an algorithm that uses while loops to determine the minimum and maximum value in a list of numbers. Post your comments/questions below and please subscribe.

This AP Chemistry video explains the properties of single, double and triple covalent bonds. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Calculus AB/BC video derives the product rule for evaluating the derivatives of the products of differentiable functions. This video is part of Unit 2 of AP Calculus AB/BC on Differentiation - Definition and Fundamental Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Physics C (Mechanics) video covers a worked example on uniform horizontal circular motion. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Computer Science A video covers an algorithm that uses while loops to determine the frequency of a character in a string. Post your comments/questions below and please subscribe.

This AP Chemistry video explains how to interpret the potential energy diagram for a covalent bond, and identify the bond length and bond energy. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Calculus AB/BC video derives the derivative of the elementary functions cos(x), sin(x), e^x and ln(x) using the definition of the derivative. This video is part of Unit 2 of AP Calculus AB/BC on Differentiation - Definition and Fundamental Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Physics C (Mechanics) video derives the equations of motion for non-uniform vertical circular motion. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Computer Science A video covers an algorithm that uses while loops to identify the digits in an integer. Post your comments/questions below and please subscribe.

This AP Chemistry video explains the polarity of covalent bonds, dipole moments and how to determine whether a bond is covalent or ionic. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Calculus AB/BC video gives a worked example on using the derivative rules to evaluate the derivative of a function with polynomial and radical terms. This video is part of Unit 2 of AP Calculus AB/BC on Differentiation - Definition and Fundamental Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Physics C(Mechanics) video derives an equation for the acceleration for the case of non-uniform circular motion. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Computer Science A video describes the while loop, which is used to repeat the execution of code and control the flow of a program. Infinite loops are also explained. Post your comments/questions below and please subscribe.

This AP Chemistry video summarises the types of chemical bonds, being ionic, covalent (polar and non-polar) and metallic. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Calculus AB/BC video shows several rules for simplifying the derivatives of polynomial functions (also applies to other functions). This video is part of Unit 2 of AP Calculus AB/BC on Differentiation - Definition and Fundamental Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Physics C (Mechanics) video derives the equations of motion for uniform horizontal circular motion. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Computer Science A video covers a worked example on truth tables. Post your comments/questions below and please subscribe.

This AP Chemistry video explains how to name different ionic compounds formed from a transition metal, and analogous ionic compounds. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Calculus AB/BC video proves the power rule using the definition of the derivative. This video is part of Unit 2 of AP Calculus AB/BC on Differentiation - Definition and Fundamental Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Physics C (Mechanics) video derives an equation for the centripetal (centre-seeking) acceleration for the special case of uniform circular motion. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Computer Science A video covers a worked example on truth tables. Post your comments/questions below and please subscribe.

This AP Chemistry video explains how ionic compounds are formed and the number of charges gained or lost based on the groups of the elements in the periodic table. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Calculus AB/BC video provides a worked example on how to determine if a function is differentiable. This video is part of Unit 2 of AP Calculus AB/BC on Differentiation - Definition and Fundamental Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

This AP Physics C (Mechanics) video covers a worked example on air drag, a type of resistive force that depends on the velocity of a body. This video is part of Unit 2 of AP Physics C (Mechanics) on Newton's Laws of Motion. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.