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作文地带导读：a pyramid with base area B and height h: 　　You should know all these formulas without needing the reference area; don’t neglect to memorize and understand the formulas because you have the reference area as a crutch. Instea...

You of SAT Test-Taking Rules

作文地带导读：ETS, the company that writes the test, provides the following breakdown of coverage:TopicPercent of TestUsual Number of QuestionsMiscellaneous6%3　　This breakdown is accurate, but it is too broad to help you direct your study...

of Geometry SAT Math Content

作文地带导读：Period of Oscillation of a SpringPotential Energy of a SpringVelocity of a Spring at the Equilibrium PositionPeriod of Oscillation of a PendulumVelocity of a Pendulum Bob at the Equilibrium Position...

of problems Formulas Key Mechanics

作文地带导读：Formula for Force of Kinetic FrictionFormula for Force of Maximum Static Friction...

of Formulas Key Dynamics Friction

作文地带导读：Before the object is released, it has a certain amount of gravitational potential energy, but no kinetic energy. When it hits the ground, it has no gravitational potential energy, since h = 0, but it has a certain amount of ki...

The of Friction Forms Kinetic

作文地带导读：Good. An example appears below.　　While you’ll often find two or three questions in a row that deal with the same topic in physics, there is no pattern. You might find a question on modern physics followed by a question on d...

The physics of SAT Format

作文地带导读：If you’ve grasped these concepts, your weakness in math isn’t going to hurt you.　　ETS breaks down the concepts you need to know for the test into six categories:TopicPercentage of the Test (These figures are only approxima...

You physics of SAT Content

作文地带导读：Mass of 1 mol of C2H5OH = 46.08 g　　Now use the formula you learned above to find the percent compositions of the constituent elements: Mass percent of C: 100% = 52.14%...

of percent Composition Compounds constituent

作文地带导读：Explanation　　If the density of the gas is equal to , then d = 4.00 g/mol ∏ 22.4 L/mol, so the density = 0.179 g/L.　　If conditions are not standard, we can use this expanded version of the ideal gas equation:　　Another re...

of gas volume density Gases

作文地带导读：Graham's law states that the rates of effusion of two gases are inversely proportional to the square roots of their molar masses at the same temperature and pressure: 　　Effusion is the term used to describe the passage of a ...

of Law Effusion Diffusion Grahams