Cracking the SAT Physics Subject Test

Key Terms force energy work law of conservation of energy first law of thermodymamics conserved total work kinetic energy work–e ...

Summary Work done by a constant force is the product of force and distance and the resulting change of energy W = Fd cos θ. Forw ...

Chapter 5 Thermal Physics In this chapter we will discuss heat and temperature, concepts that seem familiar from our everyday ex ...

TEMPERATURE SCALES Temperature can be expressed in degrees Celsius (°C); water freezes at 0°C and boils at 100°C. Temperature ca ...

PHYSICAL CHANGES DUE TO HEAT TRANSFER Calorimetry I: Heat Transfer and Temperature Change The change in temperature that a subst ...

Here’s How to Crack It We’re given c, m, and Q, and we know that ∆T = Q/(mc). Celsius vs. Kelvin Since temperature measured in K ...

be the final temperature of both the Teflon and the water, then Qlost by Teflon = mTefloncTeflon(Tf − 430°C) and Qgained by wate ...

Notice how little the temperature of the water changed. Water has a very high specific heat and can absorb large amounts of ther ...

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The heat of fusion for water is 334 kJ/kg. How much thermal energy is required to completely melt a 100-gram ice cube? Here’s ...

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HEAT TRANSFER There are three principal modes by which energy can be transferred: Conduction An iron skillet is sitting on a hot ...

THERMAL EXPANSION When a substance undergoes a temperature change, it changes in size. Steel beams that form railroad tracks exp ...

absorbed. The change in volume, ∆V, corresponding to a temperature change, ∆T, is given by the equation ∆V = βV 0 ∆T where V 0 i ...

THE KINETIC THEORY OF GASES Unlike the condensed phases of matter—solid and liquid—the atoms or molecules that make up a gas do ...

and the mass of one mole of any substance is its atomic or molecular mass (these values are given in the Periodic Table of Eleme ...

THE IDEAL GAS LAW Three physical properties—pressure (P ), volume (V ), and temperature (T)—are commonly used to describe a gas. ...

molar mass), the equation for vrms is also often written as follows: Notice that these last two equations can only determine vrm ...

What happens to the pressure of a sample of helium gas if the volume is reduced from 6 liters to 3 liters, with no change in te ...

THE LAWS OF THERMODYNAMICS We’ve learned about two ways in which energy can be transferred between a system and its environment. ...