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.
- 01:51 “a body that moves with time. A body is set to be in equilibrium when all the forces acting on the body cancel out, that is, the resultant of all the forces acting on the body is zero. What is resultant and equilibrium fo...”
- 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...”
- 01:03 “under this topic. Now what is equilibrium of forces? When forces act on a body, it may change the position of rest of the body or cause the body to rotate about its fixed axis. A body is set to be in equilibrium when it...”
Cost of Production
This lesson covers the concept of cost in economics, focusing on the cost of production. It explains different types of costs, such as fixed and variable costs, and discusses the factors of production that contribute to overall costs.
- 30:30 “So you will give them the answer according to the demand of the question. The first one says as what output is AC at the minimum? This is your AC. What's the minimum AC up? Yes, five. Trace it to your quantity. Four. AC...”
- 16:04 “you calculate your worth, your total cost, please take note, your total cost here is going to be worth, it's going to be fixed cost, plus worth, plus variable cost, okay, remember the first one I get to you is worth, is...”
- 29:25 “Is that so? They are actually at what output is AC at the minimum? So you trace the minimum AC towards to output. What do you have here? Four. So your answer would be AC is at the minimum at output four. It's not more th...”
Revenue Types
This lesson defines revenue and explains its three main types: total revenue, average revenue, and marginal revenue. It covers how to calculate each type and their relationships to production and sales.
- 13:22 “so you get this rubbish, and you get this mc, mc is what, change in c, that's 25, 25, and you get what, the next one, just use the formula, and you are able to add your answer, so the next question says, at what output,...”
- 19:50 “Then finally, the question next question says if you want you should determine the output where MC begins to rise. As what output does MC begins to rise? So you go back to the words to the table. MC. This is your MC. Yea...”
- 15:24 “where do you have maximum profit, maximum profit, okay, so, let's go to the next one, 9, and 8, is that profit, yes, how much profit, profit of 1, R, I know, you see, 9 minus worth, 8, the difference between your, c, R,...”
Government Revenue and Expenditure
This lesson covers the classification of government revenue into revenue receipts and capital receipts. It also explains government expenditure, distinguishing between capital and recurrent expenditure. Students will learn how to prepare statements of revenue and expenditure accounts.
- 11:07 “we have a balance brought forward that the balance of the revenue 3,500,500 NERA, then we have the license fees 31,750,000, 15 NERA, then fines 5,325 NERA, statutory allocation 750,000 NERA, interest on deposits 4,320, r...”
- 09:36 “where the expenditure is higher than the revenue what you have is a deficit. So let's look at the solution that I told you all the items of expenditure are debited to the accounts and what are those items of expenditure...”
- 11:55 “for the expenditure. If we add this will not give us 4,300 and 13,000 but our revenue total will give us 4,300 and 13,500 and 30. Now when we add all the items of expenditure together and we deduct from these total it wi...”
Chemical Symbols and Formulae
The lesson covers the symbols of the first 20 elements and how to write chemical formulae and equations. It explains the differences between elements, compounds, and mixtures, as well as the concept of radicals and valency. The laws of conservation of mass and constant composition are also discussed
- 13:57 “And now you balance hydrogen. Check the atom count. You have 3 hydrogen A, you have 2 hydrogen A. The best I can balance this is, I put 2 A. Like I told you, you don't balance down. You don't balance by the soft grit. Yo...”
- 14:44 “that nitrogen with balance, nitrogen with balance A. My hydrogen is balanced, my nitrogen is balanced. The next I need to balance is oxygen. How many oxygen do I have now on the product side? I have 3 A, 2 A, making 5 ox...”
- 17:18 “ion 3 chloride. The next KOH plus CO2 to give us K2 CO3 plus H2O. And then the next is C6 H2FO6 plus O2 to give us CO2 plus H2O. And the last is KCLO3 to give us KCL plus O2. All the equations are no balance. You need to...”