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This geometry video tutorial provides a basic introduction into the different types of special quadrilaterals and the properties of quadrilaterals. It contains plenty of examples and practice problems of calculating the area, perimeter and diagonal length of many quadrilaterals such as squares, rectangles, rhombuses, kites, trapezoids, and parallelograms as well as missing sides and missing angles.

Here is a list of topics:
1. How to calculate the area of a square
2. how to find the perimeter of a square
3. area of a rectangle
4. how to calculate the perimeter of a rectangle
5. how to determine the length of the diagonal of a rectangle
6. how to determine the missing angles of a rhombus
7. how to calculate the area of a rhombus
8. how to calculate the missing angles of a rhombus
9. how to determine the missing sides of a rhombus
10. How to find the perimeter of a rhombus
11. area of a kite
12. how to calculate the side lengths of a kite using the pythagorean theorem
13. missing angles of a parallelogram
14. How to calculate the area of a parallelogram
15. how to determine the area of a trapezoid

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This algebra video tutorial explains how to solve linear equations with decimals and parentheses.

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This algebra video tutorial provides a basic introduction into multiplying and dividing numbers. It explains how to perform basic multiplication by hand as well as long division. It helps you to understand the concept of multiplication which is repeated addition. Division is simply the opposite or reverse of multiplication.

New Algebra Playlist:
https://www.youtube.com/watch?v=nTn9g...

This chemistry video tutorial provides a basic introduction into Normality for acid base reactions. It explains how to calculate the normality of a solution from Molarity and how to calculate it by determining the equivalent weight of a substance. Normality is defined as the number of equivalent weights per liter of a solution. This tutorial contains plenty of examples and practice problems. It explains how to calculate normality using a unit conversion / dimensional analysis process.

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This chemistry video tutorial explains how to calculate the molarity of a solution given the mass of the solute and the volume of the solution. It also discusses how to calculate the molarity given the mass percent and density of the solution. The last problem illustrates to how calculate the molarity given the density and the molality of the solution. There's plenty of practice problems to work on in this tutorial.

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This Physics Final Exam Review contains multiple choice problems on pressure in fluids, simple harmonic motion, the simple pendulum, standing waves, sound waves, & the doppler effect.

Here are some other videos of interest:

Buoyant Force Formula Derivation:
https://www.youtube.com/watch?v=Qgl_l...

Apparent Mass Formula Derivation:
https://www.youtube.com/watch?v=yQIl0...

Bernoulli's Equation Practice Problems:
https://www.youtube.com/watch?v=xTAfy...

Mechanical Waves Practice Problems:
https://www.youtube.com/watch?v=qm1hD...

Standing Waves In Organ Pipes:
https://www.youtube.com/watch?v=7eyYN...

Sound Intensity & Decibels:
https://www.youtube.com/watch?v=twppI...

Doppler Effect - More Practice Problems:
https://www.youtube.com/watch?v=JYt73...

Here is a list of topics:
1. Density of Fluids
2. Calculating The Force Exerted By The Atmosphere
3. Absolute Pressure and Gauge Pressure
4. The Hydraulic Lift
5. Buoyant Force & Archimedes Principle
6. Calculating The Density of an Object Using Apparent Mass
7. How To Determine The Fraction of an Object Submerged in Water
8. Bernoulli's Equation and The Equation of Continuity
9. Torricelli's Theorem
10. The Force Exerted By Wind on a Roof
11. Finding The Spring Constant using Hooke's Law and The Potential Energy Stored in a Spring
12. Conservation of Energy of a Mass Spring System - Mechanical Energy, Potential Energy and Kinetic Energy.
13. Finding The Amplitude, Frequency, Period, and Maximum Acceleration of a Mass-Spring System Given The Position Equation Describing Its Motion.
14. The Frequency of a Simple Pendulum
15. Calculating The Gravitational Acceleration of a Planet Using a Simple Pendulum
16. Calculating The Speed of a Standing Wave on a String Under Tension as well as the Wavelength, Fundamental Frequency and the Harmonics of such a Wave in Addition to Determining The Number of Loops, Nodes, and Antinodes Present.
17. Another Problem on Fundamental Frequency & Harmonics
18. Speed of Sound vs Temperature
19. Sound Level and Intensity Calculations
20. Calculating The Intensity of Sound at a Distance
21. How To Calculate The Fundamental Frequency and The Overtones of an Organ Pipe That is Open at Both Ends and Closed at One End.
22. Identifying The Type of Organ Pipe Using Harmonics
23. Beat Frequency Generated By Two Tuning Forks
24. Determining The Possible Frequencies Generated By a Guitar String Using Beat Frequency
25. Identifying The Exact Frequency of a Guitar String Using The Beat Frequency Generated By Two Tuning Forks
26. The Doppler Effect - a simple example
27. The Doppler Effect - a more complicated example

This chemistry video tutorial focuses on conceptual problems relating to le chatelier's principle and ksp - the solubility product constant. It explains how to determine the direction in which the reaction will shift if the concentration of the product ions changes. It also explains how to determine if precipitation or dissolution will occur due to changes in concentration or temperature for an endothermic reaction and how to determine the effect of pH on the molar solubility of a compound. This video also explains how to determine which compound will have the highest molar solubility given the ksp values.

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This physics video tutorial explains how to convert units of heat energy. It explains how to convert joules to calories in the first problem. In the second problem, it discusses how to convert food calories to joules and in the last example, it explains how to kilojoules to food calories. This tutorial contains plenty examples and practice problems with unit conversion of thermal energy.

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This chemistry video tutorial explains how to calculate the enthalpy of reaction by using the average bond dissociation energies listed in a table. It contains examples and practice problems of calculating the enthalpy of formation of 1 mole of HCl, the enthalpy of combustion of methane and the enthalpy of reaction between methane and chlorine. The enthalpy of reaction is equal to the sum of all the bond energies of the reactant minus the sum of all the bond energies of the products. Breaking a bond is an endothermic process while forming a bond is an exothermic process.

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This physics video tutorial explains how to calculate the induced emf in a moving conductor or a sliding bar generator using faraday's law of electromagnetic induction. It also explains how to calculate the induced current in the circuit, the power dissipated by the resistor, and force needed to pull the bar in the presence of the external magnetic field. This force is equal to the magnetic force acting on a current carrying conductor in a magnetic field.

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This physics video tutorial explains how to solve problems associated with the bulk modulus of materials. The bulk modulus is the ratio of bulk stress and bulk strain. The bulk stress is the ratio of force and area which is equivalent to the pressure exerted by a fluid. The bulk strain is the ratio of the change in volume to the original volume. Whenever you place an object in a fluid, the volume of the object decreases due to the pressure exerted by tge fluid from all sides. The amount by which the volume decreases depends on the bulk modulus of elasticity of the material. As the bulk modulus increases, the compressibility of the material decreases. Gases have a high compressibility factor and a low bulk modulus value for example. This video contains 1 practice problem on bulk modulus and fluid mechanics with all of the equations and formulas needed to solve it.

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This physics video tutorial provides a basic introduction into equivalent resistance. It explains how to calculate the equivalent resistance of complex circuits with resistors in series and parallel combinations. It contains plenty of examples and practice problems.

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This chemistry video tutorial explains how to determine the units of the rate constant K for a first order reaction, second order reaction, and a zero order reaction. It provides a formula and a simple process to calculate it. This video is part of the chemical kinetics series. It contains plenty of examples for you to learn the concept.

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This chemistry video tutorial explains how to calculate the height of water in a barometer given the density and column height of a mercury barometer. This tutorial explains how to derive the formula to calculate the column height of water using other equations in physics and geometry. The weight of the atmosphere must equal the weight of the fluid in the column for equilibrium to be established. Knowing this, you can derive the formula using density and the volume of a cylindrical prism.

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