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Cognitive Friday: Holiday Shopping 150 150 Suzanne

Cognitive Friday: Holiday Shopping

The holiday season is a special time for families. It is also a very special time for retailers, a segment of business that has mastered their understanding of the cognitive processes which people bring to the shopping experience. Consumer behaviors have been studied at length by marketers to understand how to get people to buy…

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Angle Between Pair of Straight Lines 150 150 SchoolTutoring Academy

Angle Between Pair of Straight Lines

Angle between pair of straight lines: We know that the equation ax2+2hxy+by2=0 represents a pair of straight lines passing through origin and hence it can be written as product of two linear factors, ax2+2hxy+by2= (lx+my)(px+qy), where lp=a, mq=b and lq+mp=2h. Also, the separate equations of lines are lx+my=0 and px+qy=0. So, the angle between the…

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Dimensional Analysis 310 74 School Tutoring

Dimensional Analysis

Dimensional Analysis can be very useful when you come across a situation where you forget a formula that applies to certain values. This method is also proven to be beneficial when converting between units within a problem. For example, you are asked to find the time it took for a car to travel 200 meters…

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Physics: Momentum and Impulse 610 300 School Tutoring

Physics: Momentum and Impulse

When you jump , you automatically bend your knees. Why does this make a better jump? It is because of Impulse. Impulse is Force multiplied by time. Impulse = Force x time Time in here is time in contact to relieve the force. The more time it is in contact, the less force is applied.…

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Intervals and Neighbourhoods 150 150 SchoolTutoring Academy

Intervals and Neighbourhoods

If a and b are any two real numbers such that a is less than b (a<b). Then the set {x€ R/ a≤ x ≤ b} is called a closed interval with end points a and b and is denoted by [a,b]. The set {x € R/a<x<b} is called an open interval with end points…

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Geometry: Distance Formula 150 150 SchoolTutoring Academy

Geometry: Distance Formula

Usually the coordinate place consists of two axes namely X axis and Y axis. Thus, a point in a coordinate plane is usually denoted by the coordinates (x,y) where x is the perpendicular distance of the point from Y-axis and y is the perpendicular distance from the X-axis as shown below. Thus we can easily…

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Distance Between Two Parallel Lines 150 150 SchoolTutoring Academy

Distance Between Two Parallel Lines

We know that the perpendicular distance from origin to a straight line whose equation is a+by+c=0 is |c|/√(a2+b2). Also, we know that the perpendicular distance from (h,k) to ax+by+c=0 is, |ah+bk+c|/√(a2+b2). These two are the formulas to find out the distances to a line from origin or a point. But, how to find the distances…

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Chemistry Review: Molar Mass 701 330 School Tutoring

Chemistry Review: Molar Mass

Molar mass is used to convert moles to grams. If we look at 1 atom of carbon-1, it has a mass of 12 amu. 12 grams is equal to 1 mole of carbon-12, which has 6.02×1023 atoms. Thus, 1 mole of any element has a mass in grams that is numerically equivalent to its atomic…

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Mathematics Review: Proving Trigonometry Identities 385 314 School Tutoring

Mathematics Review: Proving Trigonometry Identities

Trigonometry identity questions are usually you are given an equation and you have to change either left or right side in to another, using the properties below.   sin θ  =    1   csc θ csc θ  =    1   sin θ cos θ  =    1   sec θ sec θ  =    1   cos…

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Periodic Trends: Ionization Energy 150 150 SchoolTutoring Academy

Periodic Trends: Ionization Energy

Specific patterns of certain elemental characteristics are present in the periodic table. The tendencies of these patterns increase or decrease as you move along the columns and rows of the table. These patterns are called periodic trends. One of them is ionization energy. Ionization energy is the energy needed to remove an electron from an…

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