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.
- 01:44 “Now, for that force to act, it means that this person must have an energy which he has told that allows him this force to act on that rod and this bucket is lifted. What does it mean? It means that a particular form of e...”
- 20:14 “Thanks for watching. My name is Uche Ugo, till next class.”
- 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...”
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...”
Exponential Equations
This lesson covers the definition and properties of exponential equations. It explains how to solve exponential equations of linear form by ensuring the bases are the same. Examples are provided to illustrate the process of finding the unknown variable in these equations.
- 07:10 “Then two is common minus two is common here we have minus two into bracket y minus four equals zero. We can see that one minus four is common between these we have y minus four into y minus two or equals zero. So it mean...”
- 07:57 “can easily say that two raised to power x equals four. Then this is two raised to power x equals two raised to power two. Then since we have the same base therefore x equals two. That is when our y equals four. So when y...”
- 04:44 “minus one. That is four is per minus one. All raised to power was x plus one equals four raised to power two. And by the time we use what we call the power law in our indices, in our law of indices, we can easily have th...”
Converting Base 10 to Binary
This lesson teaches how to convert base 10 numerals into binary numbers using two methods: subtraction and successive division. Students will learn to identify the powers of 2 and apply them in the conversion process.
- 02:30 “And now we are given the number 5. Okay, now these are the powers of 2. So, if it is good, you get familiar with them as you convert numbers in base 10 to base 2. Okay, now we are given number 5 to convert to base 2. So,...”
- 04:07 “So, what do we do? We write 1 here, 4, 5, then we have 1 left. So, I remember right now, the next power is 2, but we know that 2s is 1. So, we can have anything here, because it's not possible, we get 2 from 1. And 1 is...”
- 01:32 “You have to be familiar with the powers of 2. To be able to convert numbers from base 10 to numbers in base 2, you have to be familiar with the powers of 2. So, 2 to the power of 0 equals 1 to the power of 1 equals 2 to...”