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Chemical Equilibrium

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

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Acids & Bases

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

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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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