Heat and Temperature
This lesson covers the definitions of heat and temperature, their differences, and the effects of heat on substances. It explains the kinetic molecular theory and how heat causes changes in state, such as solid to liquid and liquid to gas.
- 16:35 “and that is the linear expansivity. Now, our definition for linear expansivity, linear expansivity is always represented by the symbol alpha. And it is defined as the increase in length per unit's length per degree rise...”
- 21:32 “L1, 10.00, multiplied by 80 minus theta 3. So, we have 0.50, L1, 10, multiplied by 50. So, our linear expansivity for this material equals 1 times the rest of power minus 3 per kV. That is the unit of linear expansivity....”
- 18:09 “Then, with this, we cannot talk about increase in length. If we trade this down, we discover that from here to here is our increase in length. So, coming back to the formula, linear expansivity was increase in length or...”
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.
- 25:13 “now let's get 0.2 times 0.2 give us 0.0.04, now 2.8 points 1 for divided by 0.04 now give us, now give us our fourth is equal to 7.003.5 times 10 raise to the power minus 9,”
- 05:35 “G R square, M comes to M, we have, G is equal to, small G R square over, over M. By so doing, we have these as, big G. Okay, from this place, we will explain this, we've done this, we'll explain this, we'll explain the g...”
- 24:19 “here, now let's get this, 6.67 times 42 times 10 raise to the power, let's have this 42 times 6.67 or give us as we have this 28 0.14 times 10 raise to the power minus 9, over”
Similar Shapes
This lesson covers the identification of similar shapes such as triangles, rectangles, squares, cubes, and cuboids. It explains the criteria for similarity, including proportional sides and equal angles. The lesson also includes methods for enlarging figures using scale factors and calculating lengt
- 15:18 “this is 2.5 bigger than the other sides, that's the word, the scalar factor, after find your scalar factor, now, let's have an enlargement, one you enlarge, what does it mean, an enlargement like I said before, is when t...”
- 23:43 “triangle, BAC, that's remember from the scalar, from the scalar that we meant comparison, now you will see why the scalar of 2 can also be checked, so that gives me 384, the bigger one, over 96, now if you look at 96, so...”
- 21:03 “the first triangle is triangle, triangle, B, A, C, now the formula is 1 over 2 multiplied by base, multiplied by height is the area of each triangle, now that will give us 1 over 2 multiplied by what's the base, the base...”