Energy Forms and Conversions

This page focuses on different forms of energy and their interrelationships, particularly mechanical energy.

The page introduces three main forms of energy:

1. Kinetic Energy (Ec)
2. Potential Energy (Ep)
3. Mechanical Energy (Em)

Definition: Mechanical Energy (Em) is the sum of Kinetic Energy (Ec) and Potential Energy (Ep).

The formula for gravitational potential energy is presented as Ep = m • g • h, where m is mass, g is gravitational acceleration, and h is height.

Highlight: The conservation of mechanical energy principle is illustrated, showing that the sum of potential and kinetic energy remains constant in an isolated system.

The page also includes a table of metric prefixes, ranging from pico (10^-12) to giga (10^9), which is essential for handling various scales in physics calculations.

Example: Using the prefixes, 1 gigawatt (GW) would be equal to 10^9 watts, while 1 picosecond (ps) would be 10^-12 seconds.

Electrical Concepts and Circuits

This page delves into electrical concepts, presenting key formulas and laws related to electric current, voltage, and resistance.

The page begins by defining electric current intensity:

Definition: Electric current intensity (I) is the quantity of electricity flowing per unit time.

It then introduces several important electrical quantities and their relationships:

• Electromotive force and voltage • Conductance and resistance • Ohm's Law

Highlight: Ohm's Law is a fundamental principle in electrical engineering, expressed as V = R • I, where V is voltage, R is resistance, and I is current.

The page also covers electrical work and power, providing formulas such as:

• P = V • I (Power) • W = V • Q (Electrical work)

Example: In a circuit with a voltage of 12V and a current of 2A, the power would be P = 12V • 2A = 24W.

The document concludes with information on connecting electrical components in series, parallel, and mixed configurations, along with their respective formulas for equivalent resistance.

Vocabulary: In a parallel connection, the total conductance is the sum of individual conductances, while in a series connection, the total resistance is the sum of individual resistances.