Gravitational Force and Fields
The lesson covers the concept of gravitational fields and the laws of gravitational force as proposed by Isaac Newton. It explains the relationship between masses and the distance between them in determining gravitational force.
- 01:35 “Now, what are we trying to see? From this side, I will remove this word that F is equal towards big G, M1, M2, over R2. Now, this relationship or this is the two laws of Isaac Newton, which is what, the first one, which...”
- 00:49 “Field is a region where forces are being experienced. Now, because we want to look about gravitational feed, what is gravitational feed? Draftational feed is a region where gravitational forces are being experienced. Now...”
- 14:22 “Now, I can take care of this and also take care of this. I have it as what's R, which we give us as what's VX square is equal to G M over R. Like I said before, I can substitute the M to be the mass of the X. Then, I'll...”
Work, Energy and Power
This lesson covers the definitions of work, energy, and power. It includes calculations for work done, gravitational potential energy, and power in watts. The lesson also distinguishes between kinetic and potential energy and explains energy transformation and the law of conservation of energy.
- 04:00 “And that is 300 Jews or 300 Newton-Meta. Another example, where we have situations in which a force is applied to a body at an inclined angle theta. The formula will change a little bit. And that would be F multiplied by...”
- 06:35 “Another example, where we have a force of 18,000 Newton, which moves a body through a distance of 17 m. And the direction of the force. Force to calculate the work done, that would be force multiplied by distance. And th...”
- 03:12 “A boy applied a force of 16 Newton to push a wheelbarrow through a distance of 5 m, calculates the work done by the boy. For us to do that, we bring out the parameters provided. The force is 16 Newton and the distance is...”
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.
- 22:07 “the subduer formula, which is 30 times 6 divided by 14. So our F equal to 12.9 newton. So our force F equal to 12.9 newton. Mind you, we derived an equation based on the law that the sum of the forces acting upward must...”
- 24:48 “unlike the example that we did. Thank you for watching. My name is Mr. Bakari. Till next time.”
- 23:07 “E equal to 30 minus 12.9. E equal to 30 minus 12.9. That's 1, 7, 1, 17.1 to 17.1 newton. So that's our E. Very easy. Now let's look at the evaluation questions. Distinguish number one, distinguish between”
Magnetic Fields
This lesson covers the concept of magnetic fields, including types of magnets such as bar magnets. It explains the flow of magnetic forces from the North pole to the South pole and the principles of attraction and repulsion between magnets. The lesson also touches on how to create a magnet and the c
- 33:44 “Now, we have that our force is given. Let's make use of our calculator. We have 1.6 times 6.7 times 10. Now, give us 1.7.2 times 10 times 10 times sin 80.”
- 34:35 “Then, we have this to be f is equal to 10 times 7.2 times teris per minus 10 times sin 80. From here, we have the force is equal to this point 2. Now, we have to get sin 80 times this sin 80. Because our calculator does...”
- 35:24 “So, you can use your calculator to get sin 80 that you multiply everything to get the answer in new thing. Now, let's look at the second question which is b, b parts. The same thing is applicable. Let's start from this p...”
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.
- 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...”
- 22:06 “As established mathematically, the weight of an object is the poorer of mass and the acceleration due to gravity. That is, mass m, mass m times g, which is the acceleration due to gravity. And that is the formula on the...”
- 21:17 “This is the mass times the weight, the acceleration due to gravity. And the mass is always major in kilogram as said earlier why the g, which is the acceleration due to gravity, is having an equivalent unit with the norm...”
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.
- 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...”
- 17:34 “The second question says, a boy of mass 10 kg runs up a staircase having a height of 3.00 meters. Find the work done against gravity. And we are giving an acceleration due to gravity, same as the first question, 10 meter...”
- 18:20 “So, we multiply 10 with 10, then with the 3, then we have a total work done of about 300 joules. The third question says, calculate the work done by a body of weight 200 newtons, which moves through a distance of 12 mete...”
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...”
- 29:45 “Remove this proportionality sign, we have z q. q is equal to what? The electricity, which is what? i, c, y, z is the constants, which you have that word, m is equal to z, i, c. Nice. We have it here. Now, the second law...”
- 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.”
Gas Laws Overview
This lesson covers the basic gas laws including Boyle's Law and Charles's Law. It explains the relationship between volume, pressure, and temperature of gases, and introduces the Kelvin scale for temperature. The general gas equation PV = nRT is also discussed.
- 00:10 “Good day everyone, my name is Adekunle, I'll be teaching you chemistry and the topic for today is gas loss. The first gas loss we are going to talk about is boy's law. According to the about board in 1662, it says the vo...”
- 17:59 “of oxygen. I believe you understand that. For marbogadro's law, this is the next law. This is that equal volume of gases at the same temperature and temperature, contain the same number of molecules. Given the, a particu...”
- 23:38 “of 1. Now comparing with hydrogen and the gas s, R8 over Rs equals to square root of that m represents our relative molecular mass this time over these, put in the values. And then Gavin's knowledge that rate is volume o...”
Projectile Motion
This lesson covers the definition of projectile and projectile motion. It explains the concepts of time of flight, maximum height, and range, along with the relevant equations and examples from sports and warfare.
- 03:57 “Just like we said in the last session that when an object is projected vertically upward, it will get to a particular height that it will be able to move upward again. It will stop momentarily before coming down. And tha...”
- 10:28 “The object has landed. So we now substitute the horizontal. Now, we have R equal to U cos theta horizontal. And times our capital letter T, I hope you remember, 2U sin theta over G times 2U sin theta over over G. So afte...”
- 00:02 “Good day, everyone. My name is Mr. Bakare. I'm your physics teacher today, and the topic we'll be teaching today is projectiles. Now, before we move on, let's look at the objectives of the topic. Number one, at the end o...”