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Month: August 2013

Newton’s laws

Definition 1: Newton’s first law of motion An object continues in a state of rest or uniform motion (motion with a constant velocity) unless it is acted on by an unbalanced (net or resultant) force. Definition 2: Newton’s second law of motion If a resultant force…

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PERCENTAGE COMPOSITION

Knowing either the empirical or molecular formula of a compound, can help to determine its composition in more detail. The opposite is also true. Knowing the composition of a substance can help you to determine its formula. There are four different types of composition problems that…

Redox reactions

http://maimelatct.com/ Chipa Thomas Maimela‘s insight: Redox reactions involve the exchange of electrons. One ion loses electrons and becomes more positive, while the other ion gains electrons and becomes more negative. To decide if a redox reaction has occurred we look at the charge of…

Series resistors

http://maimelatct.wordpress.com/ Chipa Thomas Maimela‘s insight: When we add resistors in series to a circuit: There is only one path for current to flow which ensures that the current is the same at every point in the circuit. The voltage is divided across the resistors. The voltage across…

Parallel Resistors

http://maimelatct.wordpress.com/ Chipa Thomas Maimela‘s insight: When we add resistors in parallel to a circuit: There are more paths for current to flow which ensures that the current splits across the different paths. The voltage is the same across the resistors. The voltage across the battery in the…

Resolving forces into components

See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0 the angle between the horizontal and the incline is also the angle between the gravitational force and its component perpendicular to the inclined plane (this is normal to the plane). Using this angle and the fact…

ACTIVITY

See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0   A ball bounces vertically on a hard surface after being thrown vertically up into the air by a boy standing on the ledge of a building. Just before the ball hits the ground for the…

Conservation of momentum in two dimensions

See on Scoop.it – PHYSICAL SCIENCES BREAK 1.0 Pbefore=Pafter Chipa Thomas Maimela‘s insight: Example 1: 2D conservation of momentumQuestion In a rugby game, Player 1 is running with the ball at 5 m·s−1 straight down the field parallel to the edge of the field. Player 2…

ELECTRIC CIRCUITS

See on Scoop.it – National Science Week The blog will cover Physical Sciences Topics for Grade 10-11-12 (by CT MAIMELA) Chipa Thomas Maimela‘s insight: The interactive approach to a Physical Science lesson. See on maimelatct.wordpress.com

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