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#### Chemical Equilibrium

posted Jul 1, 2014, 2:40 PM by marshall tirivangani

#### Acids & Bases

posted Jul 1, 2014, 2:36 PM by marshall tirivangani

#### Rates & Extent Of Reactions

posted Jul 1, 2014, 2:33 PM by marshall tirivangani

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#### Linear Momentum & Impulse

posted May 26, 2014, 1:13 PM by marshall tirivangani   [ updated May 26, 2014, 1:15 PM ]

 ·       Suppose there are two balls of the same size, and one is made of steal and another is made of plastic ·       If these balls are thrown in a straight line on a uniform surface with the same velocity, which one can you stop easily: a steal ball or a plastic ball? ·       Obviously you can easily stop a plastic ball ·       Now a plastic ball can be stopped easily because its mass is less, and hence its momentum is less ·       In the same token a steal ball is difficult to stop because its mass is great, and hence its momentum is great ·        So momentum is a measure of the easiness with which an object can be brought to rest ·       Suppose an object moves in an environment where there are no external forces, its momentum will not change ·       Because there is no change in momentum, no impulse will act upon the object ·       For more details including calculations please buy our Study Guide

#### Vertical Projectile Motion

posted Oct 15, 2009, 1:24 AM by marshall tirivangani   [ updated Jun 4, 2014, 4:13 AM ]

 - A vertical projectile is an object that is launched vertically upwards, assuming that no external forces are acting on it except for gravitational force- Because Fg acts on the object, its velocity gradually decreases from the point of launch until it becomes zero at maximum height - Velocity of the projectile becomes zero temporarily at maximum height, and then falls- From maximum height, as it falls, velocity of the projectile will gradually increase in the opposite direction (going downwards)- Velocity of a projectile at one point as it goes up equals to velocity of that projectile in magnitude but different directions at that same point when the object is falling down

#### Work, Energy & Power

posted Oct 13, 2009, 12:58 AM by marshall tirivangani   [ updated Jul 1, 2014, 2:26 PM ]

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#### Organic Chemisrty

posted Oct 13, 2009, 12:58 AM by marshall tirivangani   [ updated Jul 1, 2014, 2:29 PM ]

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