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...”
- 07:06 “units. So this table doesn't show completely the number of the life quantity and their units, so we only is limited. As I said, there are numerals, there are in a Zostibu number of these derived quantity. So the first on...”
- 13:26 “the time is major in second. So measurement of time, of mass, we are most often time, we are very much interested in knowing the mass of an object. So what are the instruments that we use for measuring the mass of an obj...”
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.
- 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...”
- 08:06 “the distance. If we look at the two of them, they are one of the major key measuring fundamental quantity. And that is the displacement is actually measured in meter written as this. And the distance as well, the unit, t...”
- 12:50 “in our lab at home, and we use it almost every day. So the ruler, most times, can be used, there is limitation to the use of ruler. Most of the time we use ruler to measure a distance that is not above 100 cm, and becaus...”
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.
- 03:25 “Ammeter, we said ammeter is a device used to measure the currents, and it's an ID, ammeter almost half negligible resistance, I must be connected in series to the circuits. We have the potential difference, which is also...”
- 08:49 “We have principal potential meter, now this is a device that is prepared to measure potential difference. It is apparatus commonly used to measure and or to compare the EMF, to compare EMF. It can also want to compare th...”
- 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...”