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.
- 15:04 “And it is obtained by calculating half of the total mass of the object multiplied by the square of its velocity, that is, half MV square. So, M is the mass of the object and V is the velocity of the object. So, we have a...”
- 19:16 “These are some questions to test your knowledge on the teaching of today. Number one says, what is the condition for a body to be able to work? The second question says, when is it possible for a body to do work while co...”
- 04:52 “And the formula is seen as force times distance. And it is named by a particular man known as James Prescott Joe. James Prescott Joe was a scientist who carried out a lot of research in field of energy and work done. His...”
Equilibrium of Forces
This lesson covers the concepts of static and dynamic equilibrium. It explains resultant and equilibrant forces, the moment of a force, and the conditions for equilibrium under non-parallel forces. The lesson also discusses the center of gravity and its effect on stability.
- 24:48 “unlike the example that we did. Thank you for watching. My name is Mr. Bakari. Till next time.”
- 21:11 “times the distance between the force and A. The force is 30 times distance between 30 and A. Is 6. This time between 30 and A is 6. Most be equal to another force, that's force F. Times the distance between F and E or A....”
- 00:10 “Good day everyone. My name is Mr. Bakare. I'm your physics teacher today and today's topic we'll be talking about equilibrium of forces. Now before we move on, let's look at the objectives of the topic. At the end of thi...”
Distance and Displacement
This lesson explains the concepts of distance and displacement in translational motion. It covers how to measure distance without considering direction and how displacement includes both distance and direction. The lesson also discusses the position of an object in relation to a reference point.
- 00:00 “Hello everyone, my name is Tijani Muftau Oladipupo I'm your Physics teacher, the topic before me is position, distance and displacement. At the end of the lesson, students should be able to distinguish between displaceme...”
- 04:00 “be measured and calculated. However, on the other hand, when we consider the distance and the direction of an object, then we make reference to displacements and is a major difference, a major distinction between distanc...”
- 11:58 “workshop or to get something like a wire from most of these people that sell it, they use the ant, the ant ants to measure. Although sometimes it is not always accurate, but they already give it a value to it. But in the...”
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.
- 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...”
- 09:28 “We have the acceleration, acceleration is usually changing velocity over time taking and the unit is meter per second squared. The weight of an object is the total of the mass and the acceleration due to gravity. And thi...”
- 22:53 “So multiplying 50, which is the mass of the man, times the acceleration due to gravity, which is 9.8, we have 490. And I showed you that weight or the force of an object is usually measured in new things. So the unit is...”
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.
- 20:02 “That means if I move them like this, from this place, we have it moving out, going into this, we have this coming in, coming in, that is what, the positive charge body and the negative charge body. Now, we have the colum...”
- 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.”
- 10:32 “Now, we have this from the resistivity, we have resistivity is direct proportional to the length and inversely proportional to the area. That is, we have this by removing this proportionality sign, we have, which is equa...”