Work, Energy and Power
This lesson covers the definitions of work, energy, and power. It explains potential and kinetic energy as forms of mechanical energy. The lesson also includes calculations related to work done and the concept of power as the rate of doing work.
- 00:00 “Hello students, my name is Uche Ugo, the subject is basic science and I will be taking the topic work energy and power. At the end of this lesson, I would expect each student to have achieved several objectives. The firs...”
- 09:52 “You prove what we call a teen plate. We also have chemical energy. Chemical energies are stored in bones. We have covalent and ionic bones. Now, these kind of energies exist in atomic, molecular or element states. Now, t...”
- 09:04 “It can also be converted into electrical energy, as we see in our source of light, like our solar panel and our inverters we use in our homes. Sound energy, this one works on the principle of wave movement. The wave part...”
Electric Cells and Current Electricity
The lesson covers the types of electric cells, including primary and secondary cells. It explains the concepts of electromagnetic force, current electricity, potential difference, and resistance. The arrangement of cells in series and parallel is also discussed.
- 41:43 “And we multiply it, we have got E minus V is equals to 1.01 times. Now, we have got us as votes. We have got to take this one as an evolution. Thank you for watching with us. I am M N N D John. See you in the next class.”
- 04:15 “Now we have the EMF of a cell, we said, we are told that EMF of a cell is a total energy which a current flows through the internal resistance of the cell, and external resistance of the circuit. We have these, we have t...”
- 00:00 “Good students, this is Eme Nnamdi John, I will be taking us on physics, on the topic electric field. Now, electric field, we'll talk about the electric cell. Electric cell is a device used to supply electric energy. We h...”
Fundamental and Derived Quantities
This lesson covers the definitions of fundamental and derived quantities in physics. It explains how fundamental quantities serve as the base for deriving other quantities and the importance of measurement in physical science.
- 11:53 “So energy or work done is force times distance and force is major in Newton, why distance is major in words in meter. So it's having an equivalent. Sometimes if you don't see it as new thing meter, it is usually within u...”
- 11:04 “should you come across it in another textbook for further research. Pleasure. Pleasure is given as force per unit area. So the force of an object over the area, don't forget that the force is the same thing as weight. Th...”
- 25:24 “So the last one is in terms of units, the unit of mass is kilogram and that of weight is newton. Evaluation, divine, fundamental and the life quantity in your own language to the best of your knowledge. So explaining tha...”