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.
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
03แรง มวลและกฏการเคลื่อนที่Doc EduSchoolDD.com provides concise explanations of trigonometric concepts like sine, cosine, and tangent functions. It explains how to use trigonometric functions to solve problems involving right triangles, with examples calculating values for angles like 30°, 60°, 37°, and 53° degrees. The site also summarizes trigonometric identity formulas and relationships between sine, cosine, and tangent for various angles.
19ฟิสิกส์อะตอมDoc EduThe document is about basic physics concepts related to kinetic energy. It contains three main points:
1) It defines kinetic energy (EK) as the energy an object possesses due to its motion, and explains that kinetic energy can be calculated as EK = 1/2 mv^2, where m is the object's mass and v is its velocity.
2) It discusses the relationship between an object's maximum kinetic energy (EKmax) and its maximum velocity (vmax), explaining that EKmax occurs when an object's velocity is at its highest point (vmax).
3) It provides an example calculation of converting between units of kinetic energy, showing how to convert from joules to electron
04การเคลื่อนที่แบบต่างๆDoc Edu1. The document discusses projectile motion and provides equations to calculate the time, height, horizontal displacement, and velocity of a projectile over time given the initial velocity and angle of launch.
2. Formulas are derived for calculating time, maximum height, and horizontal displacement of a projectile based on the initial velocity components along x and y axes.
3. Examples are provided to demonstrate how to apply the equations to different launch angles like 45 degrees, 60 degrees, and 30 degrees.
01บทȨDoc EduThis document provides a concise summary of key scientific concepts and formulas in fewer than 3 sentences. It begins by defining common scientific units used to measure length, mass, time, electric current, temperature, amount of substance, and luminous intensity. It then explains the International System of Prefixes used to modify unit symbols and provides examples of their use. The document proceeds to demonstrate the application of scientific concepts and formulas to solve problems involving length, area, volume, speed, time period, percentage error, and other topics. Diagrams are included to illustrate geometric and trigonometric relationships. Key formulas from algebra, trigonometry, logarithms, and other areas are also summarized concisely.
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.