Conceptual Physics

along a line. Their expansion is measured as a fraction of their initial length. In Equation 1, you see the equation for linear ...

The copper rod is heated from 15°C to 95°C. What will its increase in length be? ǻL = LiĮǻT ǻT = 95°C í 15°C = 80 C° ǻL = (0.5 m ...

Step-by-step solution We start by substituting the expression for the change in length from the thermal expansion equation into ...

18.11 - Thermal expansion: volume Thermal volume expansion: Change in volume due to a change in temperature. The equation for th ...

The temperature of 2.0 L of water increases from 5.0° C to 25° C. How much does its volume increase? ǻV = ViȕǻT ǻT = 25°C í 5.0° ...

Q = cmǻT Q = heat c = specific heat (J/kg·K) m = mass ǻT = temperature change in C° or K How much heat is required to increase t ...

Variables What is the strategy? Use conservation of energy to state that the heat lost by the object equals the heat gained by ...

18.14 - Phase changes Phase change: Transformation between solid and liquid, liquid and gas, or solid and gas. When you pop some ...

Heat required for phase changes Q = Lfm Q = Lvm Q = heat m = mass Lf = latent heat of fusion (J/kg) Lv = latent heat of vaporiza ...

In the section on latent heat, we calculated the heat transferred to the same amount of ice as it melted to be 1.23×10^4 J. Here ...

Now we use the fact that the heat transfers sum to zero as the two masses of water reach thermal equilibrium to calculate the fi ...

The insulating effectiveness of building materials is usually specified by an R-value. A material with a high R-value is a good ...

Heat transfers through the window at a rate of 1700 J/s. What is its thermal conductivity constant? k = 0.93 W/m·K 18.19 - Conve ...

18.20 - Radiation Radiation: Heat transfer by electromagnetic waves. If you place your hand near a red-hot heating element and f ...

the amount of solar radiation that strikes the collector. Some collectors, particularly those designed for industrial or researc ...

18.23 - Summary Temperature can be thought of simply as what thermometers measure. Thermometers rely on physical properties that ...

Chapter 18 Problems Conceptual Problems C.1 The standard value for a healthy human's body temperature is 37°C, to the nearest Ce ...

Section 3 - Temperature scale conversions 3.1 Convert each of the following temperatures to the indicated scale: (a) 100.00 K to ...

Section 9 - Sample problem: thermal expansion and stress 9.1 A copper rod at a temperature of 22.82°C is bolted in place between ...

12.4 A 1.32 kg sample of some material increases in temperature from 13.5°C to 39.2°C when 1.98×10^4 J of heat energy is transfe ...