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
- 00:02 “Good day, class. My name is Eme Nnamdi John. I'll be taking your physics with a topic, Magnetic Field. Today, at the end of this lesson, Lenas must be able to explain the concept of magnetic field, least type of magnets....”
- 37:52 “Now, c parallel, parallel. So, let's get for the parallel, which is equal to what? c is equal to 0. Now, from here, we can say that word. 4 is equal to qvb sin 0. Now, we already know this to be 107.2 times teris per min...”
- 00:51 “as a bar magnet. We call this a bar magnet, which have the North Seeking Pool and the South Seeking Pool. Now, in this pool, we have this, like this, we have this, like this. It simply means that the forces leaves the No...”
Separation Techniques for Mixtures
The lesson covers various methods of separating mixtures, including filtration, evaporation, decantation, and chromatography. Each technique is explained along with its applications in obtaining pure substances from mixtures.
- 07:55 “From the word magnet, sometimes it's a magnetic, why some other substances are non-magnetic. This is usually used for separating those that are a mixture that has at least one component to be magnetic. Whereby just intro...”
- 08:41 “So magnetism sometimes can be separated from non-magnetic substances by bringing a magnet close to the mixture. Then the application is to remove magnetic impurities from thin ore and to remove all the and now the applic...”
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.
- 26:53 “watching, I am Emina Di Jong, see you next time.”
- 00:02 “Good day, class. My name is Eme Nnamdi John. I'll be taking your physics with a topic gravitational phase. First, at the end of this lesson, Lennon was able to learn one calculated gravitational force between masses, cal...”
- 13:35 “I'll have it to watch. I'll have it to be MV square X over R. It's equal to the force, giving to us, which is G, M1, M2, over R2. Now, I can take care of this. One of these can take care of this. Then, I'll have it to be...”
Radioactivity and Its Types
This lesson covers the definition of radioactivity and the characteristics of radioactive elements. It explains the three types of radiation: alpha particles, beta particles, and gamma rays, along with their properties. The lesson also includes the concept of half-life and decay constants.
- 04:05 “electrical in neutral. That is they have no charge. They have negligible mass. They have high penetrating power in A and solid and several meters in lead. They are not deflected by magnetic field. This is because they ha...”
- 02:29 “That is anytime an alpha particle is emitted from a radioactive element. Then that means an atom of helium has been emitted and helium nuclei usually represented by 4 to H e. They are relatively I mass. They have little...”
- 03:19 “beta particle is emitted from a radiative substance, then they are atomic number. We increase by 1. Why the mass number will remain unchanged? Because the mass number is a 0. Beta particles are relatively light. They hav...”