Free Homework Help

Our education staff publish regular articles, tips and tutorials to help students with their homework
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.…

read more
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…

read more
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…

read more
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…

read more
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…

read more
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…

read more
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…

read more
Chemistry Review: Solubility Rules 467 316 School Tutoring

Chemistry Review: Solubility Rules

There are set of rules that are a guide to determine if an inorganic compound is soluble in water. The rules are listed in order of importance and rule 1 will overwrite rule 5. Rule 1: All salts that include a group 1 element or ammonium are soluble. Rule 2: All nitrates and acetates are…

read more
Introduction to Conics: Ellipse 150 150 SchoolTutoring Academy

Introduction to Conics: Ellipse

Just like polynomials, there are different forms for the equation of the graph of ellipse. The general form, which was mentioned before is Ax2 + By2 + Cx + Dy + E = 0. The advantage of this for is that it is a general for all graphs in conics, while the disadvantage is that…

read more
Kinetic and Potential Energy 304 234 School Tutoring

Kinetic and Potential Energy

Kinetic and Potential Energy Energy can take on many forms, two of them being potential and kinetic. Energy is measured in joules (J) which is equivalent to Newton meters (N*m). Kinetic Energy Kinetic Energy is the amount of energy an object has due to its motion. This can be represented by the amount of energy…

read more

Enter your
text here