Optical fibres Study guides, Revision notes & Summaries

1. How many electrons can an s subshell hold? 2 2. How many electrons can a p subshell hold? 6 3. How many electrons can a d subshell hold? 10 4. Which subshells are available in the first energy level? 5. Which subshells are available in the second en- ergy level? 6. Which subshells are available in the third energy level? s s and p s, p and d 7. What is Hund's rule? (Think bus seats!) Every orbital in a sub- shell must be singly filled with an electron before any one orbital can be d...

Amplitude - Correct answer-The maximum value of displacement in the oscillation cycle Displacement - Correct answer-How far the quantity has moved from its rest value at any given time Period - Correct answer-The time taken for one whole cycle of an oscillation Oscillation - Correct answer-A regularly repeating motion about a central value Wave speed equation - Correct answer-Wave speed = frequency x wavelength / v=fλ Transverse waves - Correct answer-The displacement of the wave is at ri...

Longitudinal wave - ANSWER-Particle vibration is parallel to direction of wave propagation Examples of a longitudinal wave - ANSWER-Sound waves, seismic p-waves Transverse wave - ANSWER-Particle vibration is perpendicular to direction of wave propagation Only transverse waves can be polarised Examples of a transverse wave - ANSWER-Electromagnetic radiation, seismic s-waves Particle displacement - ANSWER-The distance of a particle from its equilibrium position in given direction Amplitud...

TM111 Block 1 Part 1 Exam Questions and Answers 100% Pass Digital technology - Answer- any technology that is based on representing data as sequences of numbers Network - Answer- A collection of devices that can communicate with each other. Smart device - Answer- An electronic device that processes information and exchanges it with other devices Internet - Answer- The global internetwork that has grown since the 1960s World Wide Web - Answer- An internet service that links computer files...

Hematology questions What is the preferred anatomical site used to obtain a bone marrow aspiration on an adult? - Iliac crest Can use sternum or Vertebrae What anatomical site is used to obtain a bone marrow aspiration on an infant? - tibia Why is the bone marrow preparation examined with a low power objective? - To assess: for dilution with peripheral blood quality of marrow quality of stain quantity of megakaryocytes cellularity (fat to marrow ratio) for clusters of tumor ...

GCSE Geography AQA: Human Geography Questions and Answers Graded A+ What is urbanisation? The growth of a country's population living In an urban area What percentage of the world are urbanised? More than 50% (3.9 billion) of the world live in urban areas Why does urbanisation vary around the world? It varies between HIC which are more economically developed and LIC which are less economically developed. HIC have been industrialised so people already live in city's. What causes urbanisation...

BTEC Applied Science Unit 1 Chemistry Exam 271 Questions with Answers How many electrons can an s subshell hold? - CORRECT ANSWER 2 How many electrons can a p subshell hold? - CORRECT ANSWER 6 How many electrons can a d subshell hold? - CORRECT ANSWER 10 Which subshells are available in the first energy level? - CORRECT ANSWER s Which subshells are available in the second energy level? - CORRECT ANSWER s and p Which subshells are available in the third energy level? - CORRECT...

Capsule (slime) - ANSWER Protects the bacteria from attack by cells of the immune system. Flagellum - ANSWER Rotates to make the cell move. Viruses - ANSWER Acellular. Invade and reproduce inside the cells of other organisms. What is magnification? - ANSWER How much bigger the image is that the specimen. What is resolution? - ANSWER The ability of the microscope to distinguish between two points that are close together. Light/optical microscopes - ANSWER Uses light. Max resolut...

AQA A Level Physics Questions and Answers 2022/2023 Longitudinal wave Particle vibration is parallel to direction of wave propagation Examples of a longitudinal wave Sound waves, seismic p-waves Transverse wave Particle vibration is perpendicular to direction of wave propagation Only transverse waves can be polarised Examples of a transverse wave Electromagnetic radiation, seismic s-waves Particle displacement The distance of a particle from its equilibrium pos...

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe t...