1. Introduction When we say equilibrium‚ it is a state of balance. It is a condition where there is no change in the state of motion of a body. Equilibrium also may be at rest or moving within a constant velocity. A simple mechanical body is said to be in equilibrium if no part of it is accelerating‚ unless it is disturbed by an outside force. Two conditions for equilibrium are that the net force acting on the object is zero‚ and the net torque acting on the object is zero. Thus‚ the following objectives
Premium Force Mass Classical mechanics
lab is to determine if the rotational equilibrium condition‚ Στ = 0‚ holds experimentally. Equipment Meter stick (1) - no metal ends Fulcrum (1) Clamps (4) Weight Hanger (1) Mass Set (1) Digital Scale (1) Theory For a body to be in static equilibrium‚ two conditions have to be met: ΣF = 0 and Στ = 0 where F is force and τ is torque. (The torque is the force times the lever arm‚ r) The first condition‚ ΣF = 0‚ is concerned with translational equilibrium and ensures that the object is at rest
Premium Torque Force Archimedes
aMX (s) + H2O [pic] aMn+ (aq) + bXm- (aq) The equilibrium expression would be [Mn+]a [Xm-]b [MX]a [H2O] However the concentrations of both the solid AND the water are constants‚ so a new equilibrium expression called Ksp is derived Ksp = [Mn+]a [Xm-]b Note: The product of the concentration of ions of a sparingly soluble salt in water OTHER than at equilibrium is called the IONIC PRODUCT Example 1. AgCl [pic]
Premium Solubility Sodium chloride Ammonia
various temperatures. Background: The salt and water solution in this experiment has relatively simple solubility equilibrium of borax in water. Na2B4O7 . 10 H2O 2Na + + B4O5(OH)42- + 8H2O This reaction is an equilibrium process and 8 water molecules from the hydrated salt are lost to the reaction medium. The equilibrium constant expression for this reaction is: K = [Na+]2 [B4O5(OH)42-] [H2O]8
Premium Solubility Chemical equilibrium Water
LESSON PLAN School : Senior High School Topic : Solubility product of Constant (Ksp) Grade : XI Semester : 2 Time Allocated : 30 minutes I. Competency Standard Understanding properties‚ measuring method and applying of acid base solutions. II. Basic Competency Predicting precipitation from a reaction based on solubility and solubility product constant principle III. Indicator 1. Explain the meaning of Solubility Product Constant (Ksp) 2. Write
Premium Solubility Sodium chloride
points. P 100 d (P) Q 500 1. The figure above shows the demand curve for crude oil. If the market price is $20 a barrel‚ what is the price elasticity of demand? a. 4 b. 0.2 c. 5 d. 0.25 2. Which of the following conditions must hold in an equilibrium of a competitive market where the government imposes a per-unit tax on a good? a. The quantity sold and the price paid by the buyers must lie on the demand curve. b. The quantity sold and the price received by the sellers must lie on the supply
Premium Supply and demand Cost Marginal cost
Chemistry Stage 3 Standards Guide Exemplification of Standards through the 2010 WACE Examination Chemistry: Stage 3 Standards Guide 1 2010/33606 Copyright © Curriculum Council‚ 2011 This document—apart from any third party copyright material contained in it—may be freely copied‚ or communicated on an intranet‚ for noncommercial purposes by educational institutions‚ provided that it is not changed in any way and that the Curriculum Council is acknowledged as the copyright owner. Copying
Premium PH Acetic acid Chemical reaction
was a paleontologist‚ evolutionary biologist‚ and a historian of science. He spent many years teaching at Harvard as well as at New York University in his later life. Gould‚ along with Niles Eldredge in 1972‚ published the theory of punctuated equilibrium. Their theory stated that creatures had long periods of evolutionary stability occasionally marked with rapid periods of advancement‚ unlike the previously accepted idea of phyletic gradualism‚ which stated that evolution happened constantly and
Premium Mode Median
the fossil is strong evidence of a gradually changing form. These examples are few and far between. There is very little evidence which supports phyletic gradualism due to no intermediate species being found in the fossil record. Punctuated equilibrium is a theory that evolution is characterized by long periods of stability in the characteristics of an organism and short periods of rapid change during which new forms appear‚ especially from small subpopulations of the ancestral form in restricted
Premium Evolution Fossil DNA
Economics essay: Examine the concept of market equilibrium and discuss the reasons for and methods of government intervention in markets Market equilibrium is a situation in which the supply of an item is exactly equal to the demand of that item‚ there is no surplus nor shortage. Under the circumstances of market equilibrium‚ prices tend to remain stable. Producers and consumers react differently to changes in price‚ higher prices
Premium Externality Supply and demand Market failure