Edexcel IGCSE Physics: Double Science 復習筆記：7.3.5 The Conditions for Fusion Fusion in Stars Stars are huge balls of (mostly)?hydrogen?gas In the centre of star, hydrogen atoms undergo?nu...
Calculating Binomial Probabilities Throughout this section we will use the random variable . For binomial, the probability of a?X? taking a non-integer or negative value is always zero. Therefore a...
Edexcel IGCSE Physics: Double Science 復習筆記：7.3.4 Nuclear Fusion Nuclear Fusion Small nuclei can react to release energy in a process called?nuclear fusion Nuclear fusion is defined as: ...
Edexcel IGCSE Physics: Double Science 復習筆記：7.3.3 Nuclear Reactors Chain Reactions Only one extra neutron is required to induce a uranium-235 nucleus to split by fission During the fissi...
Edexcel IGCSE Physics: Double Science 復習筆記：7.3.2 Nuclear Fission Nuclear Fission Nuclear fission is defined as: The splitting of a large, unstable nucleus into two smaller nuclei...
Edexcel IGCSE Physics: Double Science 復習筆記：7.3.1 Nuclear Energy Nuclear Energy The nucleus of the atom contains a huge amount of energy – roughly one million times greater than the amou...
此前，AP香港考評局已經開放2022-2023年度AP大考的考試報名，社會考生也可參與，因此AP考位十分緊張，使得不少考生擔心考位問題。 在眾多考生的呼吁下，香港考場宣布于10月31日開放新增考位，此前沒有搶到考位的...
Properties of Binomial Distribution What is a binomial distribution? A binomial distribution is a?discrete probability distribution The?discrete random variable?follows a?binomial distribution?if i...
Edexcel IGCSE Physics: Double Science 復習筆記：7.2.5 Dangers of Radiation Dangers of Radiation Ionising radiation can damage human cells and tissues If the atoms that make up a DNA strand a...
Edexcel IGCSE Physics: Double Science 復習筆記：7.2.4 Contamination & Irradiation Contamination & Irradiation Contamination Contamination is defined as: The unwanted presence ...
Edexcel IGCSE Physics: Double Science 復習筆記：7.2.3 Uses of Radioactivity Uses of Radioactivity Radiation is used in a number of different ways: Medical procedures including diagnosis and ...
Edexcel IGCSE Physics: Double Science 復習筆記：7.2.2 Half-Life Half-Life It is impossible to know when a particular unstable nucleus will decay But the rate at which the activity of a sampl...
