หน่วยที่ 2 ตารางธาตุtiraphankhumduang21. The document discusses properties of elements in the periodic table, including atomic radius, ionic radius, classification of metals, nonmetals, and metalloids.
2. Atomic radius decreases from left to right within a period and increases down a group as the principal quantum level increases. Ionic radius is measured from the distance between nuclei of bonded ions. The ionic radius of cations decreases as the charge increases, while that of anions increases as the charge increases.
3. Elements are classified based on properties as metals, nonmetals, metalloids, and transition metals. Metals are good conductors of heat and electricity while nonmetals are typically poor conductors.
หน่วยที่ 2 ตารางธาตุtiraphankhumduang21. The document discusses properties of elements in the periodic table, including atomic radius, ionic radius, classification of metals, nonmetals, and metalloids.
2. Atomic radius decreases from left to right within a period and increases down a group as the principal quantum level increases. Ionic radius is measured from the distance between nuclei of bonded ions. The ionic radius of cations decreases as the charge increases, while that of anions increases as the charge increases.
3. Elements are classified based on properties as metals, nonmetals, metalloids, and transition metals. Metals are good conductors of heat and electricity while nonmetals are typically poor conductors.
เฉลย การแปลงคำอุปสรรค ม.3 , ม.4krusarawut1.) The document provides 10 examples of unit conversions between metric and other systems of units. It converts between meters/seconds and km/h, meters and nanometers, nanometers and femtometers, amps and milliamps, hours and seconds, kilograms/meters cubed and micrograms/cubic centimeter.
2.) The conversions use dimensional analysis and involve multiplying or dividing by powers of 10 to account for the different metric prefixes like milli, micro, and nano.
3.) Examples include converting 10 m/s to km/h, 0.000000007 m to nanometers, 1.5x10-5 A to milliamps, and 19,300 kg/m
CHAPTER 10 Molecules and SolidsThepsatri Rajabhat UniversityCHAPTER 10 Molecules and Solids
10.1 Molecular Bonding and Spectra
10.2 Stimulated Emission and Lasers
10.3 Structural Properties of Solids
10.4 Thermal and Magnetic Properties of Solids
10.5 Superconductivity
10.6 Applications of Superconductivity
โมมนตัมและการดลthanakit5531. The document discusses concepts of momentum and impulse including definitions, calculations using mass, velocity, and time, and examples of applying the equations.
2. Momentum is defined as the product of mass and velocity, and impulse is defined as the change in momentum over time due to an applied force.
3. Examples show calculating momentum and impulse for various scenarios involving objects with different masses and velocities, as well as determining unknown values like force or velocity.
งาȨละพลังงานthanakit5531) The document discusses work (W) in physics and defines it as the product of an applied force (F) and the distance (s) over which it acts (W=Fs).
2) Several examples are provided to demonstrate calculating work done by various constant and non-constant forces.
3) The concept of net work is introduced as the sum of individual works done by each force acting on an object.
สภาพสมึϸลthanakit5531. The document discusses concepts of mechanics including forces, moments, equilibrium conditions, and stress and strain. Various examples are provided to illustrate these concepts.
2. Key principles covered include Newton's laws of motion, conditions for translational and rotational equilibrium, and definitions of stress and strain.
3. Examples analyze systems involving blocks on inclined planes, objects on frictionless surfaces, and ropes undergoing tension to demonstrate applications of the mechanical principles. Diagrams supplement the text explanations.
มวลแรงกฏการเคลื่อนที่thanakit553This document provides information about physics concepts including force, mass, weight, vectors, trigonometry functions, and angle identities. It defines force, mass, and weight, and gives the equations for calculating weight using mass and gravitational acceleration. It also explains vector addition and subtraction, and how to use trigonometry functions like sine, cosine, and tangent to solve problems involving angles. Several example problems are provided to demonstrate applying these concepts.
2. 1. หน่วย SI (International System of Units)
เรียบเรียงโดย ครูธงชัย ควรคนึง
เริ่มต้นฟิสิกส์ (บทȨ)
2. คาอุปสรรค (Prefixes)
3. การแปลงหน่วย (Conversion of Units)