What is a continuous random variable? A continuous random variable (often abbreviated to CRV) is a random variable that can take any value within a range of infinite values Continuous random variab...
随着美国疫情的常态化，有些院校不光恢复了线下教学，还涨了学费。相信大家前段时间都听说了：美国顶尖大学的学费又涨了！ 据悉，美国排名前30的大学中有27所正在提高下一学年的学杂费。而自2019-2020学年以来，...
Edexcel IGCSE Chemistry 复习笔记 1.6 5 Ionic compounds: Bonds, Structure & Properties Ionic bonding The positive and negative charges are held together by the strong electrostatic forces...
Edexcel IGCSE Chemistry 复习笔记 1.6 4 Ionic Bonds: Dot & Cross Diagrams Ionic Bonds: Dot & Cross Diagrams Deducing Dot & Cross Diagrams for Ionic Compounds Sodium is a group 1 metal so...
Edexcel IGCSE Chemistry 复习笔记 1.6.3 Formulae for Ionic Compounds Formulae for Ionic Compounds The formulae of simple ionic compounds can be calculated if you know the charge on the ions B...
Required Practical: Investigating Flux Linkage on a Search Coil Aims of the Experiment The overall aim of this experiment is to determine how the magnetic flux linkage varies with the angle ...
Edexcel IGCSE Chemistry 复习笔记 1.6.2 Common Ions Common Ions How to deduce the charge of an ion Find the number of electrons in the outer electron shell Find out if it is easy for the atom...
Moving Conductors in a Magnetic Field Similar to a coil or a solenoid, a straight conducting rod moving through a magnetic field will also have an e.m.f induced in it This is only when the c...
Calculating Binomial Probabilities How do I calculate P(X = x): the probability of a single value for a binomial distribution? You should have a GDC that can calculate binomial probabilities You wa...
Edexcel IGCSE Chemistry 复习笔记 1.6.1 Formation of Ions Formation of Ions An ion is an electrically charged atom or group of atoms formed by the loss or gain of electrons This loss o...
Edexcel IGCSE Chemistry 复习笔记 1.5.10 Calculate Volumes of Gases Calculate Volumes of Gases Avogadro's Law Avogadro’s Law states that at the same conditions of temperature and pressure, eq...
Faraday's & Lenz's Laws Faraday's Law links the rate of change of flux linkage with e.m.f It is defined as: The magnitude of the induced e.m.f is directly proportional to the rate of cha...
