Work and energy are explored in this segment as we look at the work done by various types of forces. We also investigate what it means for the work done by an object when displacement and force are oriented in a variety of different ways.
We explain the work-energy theorem and solve an example problem involving the equations for work and kinetic energy. We also discuss when work has a positive or negative value.
We investigate Hooke's Law as we explore the concept of spring potential energy. We also examine how to find this energy mathematically and graphically.
We explore the inner workings of a hydroelectric dam as we learn about the law of conservation of energy. The difference between conservative and non-conservative forces is illustrated and we work through an example problem involving gravitational potential energy and kinetic energy.
We learn how power relates to electrical and mechanical systems. We explore the multiple ways we can express power mathematically by working through an example problem that ties in Newton's second law and kinematic equations to find its solution.
We introduce electricity with overviews of current and static electricity. We discuss electricity's place among the fundamental forces of the universe and discuss how it influences our daily lives.
We explain Coulomb's law both qualitatively as well as mathematically. We examine this law even further by doing an example problem where we solve for the electric force and field strengths. The properties of an electric field are also discussed.
We differentiate between the concepts of electric potential energy and electric potential by exploring electric potential energy qualitatively, looking at a charge between two parallel plates, and solving for electric potential in an example problem.
Current electricity is defined as we explore the relationship between voltage, current, and resistance. Ohm's law is introduced as well as the equation relating electric force and electric field.
We learn about the properties of series circuits. We examine how to find the total voltage, current, and resistance of a series circuit and learn how to find these things across individual resistors within the circuit.
We define the properties of parallel and complex circuits. We examine how to find the total voltage, current, and resistance of parallel and complex circuits. We also use a V.I.R. chart to find these things across individual resistors within a circuit.
We investigate the concept of electrical power by examining our own energy usage with an energy audit. Multiple electric power equations are derived, exploring the relationship between electric power and Ohm's law.