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# Fundamentals of Physics Chapter 18 Solutions: Temperature, Heat, and the First Law of Thermodynamics

Halliday Resnick & Walker Fundamentals of Physics Volume 1 Solutions for Chapter 18 ‘Temperature, Heat and The First Law of Thermodynamics’ provide all the necessary formulae for IIT JEE and NEET Physics. Resnick Halliday Walker ‘Temperature, Heat and The First Law of Thermodynamics’ chapter discusses different topics like temperature, the zeroth law of thermodynamics, measuring temperature, the celsius and Fahrenheit scales, thermal expansion, absorption of heat, the first law of thermodynamics, and heat transfer mechanism.

Resnick Halliday and Walker Physics Volume 1 ‘Temperature, Heat and The First Law of Thermodynamics’ contains around 108 questions. The questions are designed to help you prepare thoroughly for engineering entrance exams along with the Class 12 Physics board exam. All of these questions are of advanced level. Our solutions will help you understand how to find the molar specific heat, the number of moles, change in energy, and percentage decrease in density related to Temperature, Heat and The First Law of Thermodynamics.

Resnick Halliday & Walker Physics solutions are prepared by our subject-matter experts who have years of experience in the field of science. Getting the perfect solutions from the Instasolv team will help you in getting good marks in the exams as our solutions will help you understand all the concepts of Temperature, Heat and The First Law of Thermodynamics.

## Important Topics for Halliday Resnick and Walker Fundamentals of Physics Volume 1 Solutions Chapter 18: Temperature, Heat and The First Law of Thermodynamics

Thermometer and Temperature

The thermometer is the device that helps us to measure temperature. Temperature is basically an NSI based quantity which will help to identify hot and cold. Thermometer contains a working substance with a measurable property like length or pressure. In the chapter, you will know how thermometers work.

Zeroth Law of Dynamics

Whenever a thermometer any other object cone in contact with each other they reach a stage of thermal equilibrium. You will then take the reading of the thermometer which will help you to identify the temperature of the other object. The process provides you with consistent temperature measurement. These measurements are because of the zeroth law of dynamics.

The Kelvin Temperature Scale

The kelvin temperature scale is also from the SI system which is based on the triple point of water, 273.16K. In the chapter, you will know the connection between the temperature and kelvin.

Celsius Fahrenheit Scales

In the chapter, you will know about these two types of scales with their equations.

Thermal Expansion

All the objects change their size with the changes in their temperature. In the chapter, you will know the change in linear dimension with the change in temperature.

Heat

Heat is the energy that transfers between the system and the environment because there is a temperature difference between them. Heat can be measured in joules, calories, kilo calories or British thermal units.

Heat of Transformation

You know that matter can exist in three forms that are solid, liquid and vapour. The heat that a material absorbs can change the stage of the material for example: solid to liquid or liquid to gas. Thus the amount of energy required per unit mass in order to change the state of a particular material is known as the heat of transformation. Also in the chapter, you will know about the heat of evaporation and heat of fusion.

Other Topics Discussed in the chapter

• Work associated with volume change: that gas can easily exchange energy with its surrounding by doing some work. In the chapter, you will know how to calculate the amount of work done to change the state.
• First law of thermodynamics: mainly the principle of conservation of energy for a thermodynamic process is known as the first law of thermodynamics.
• Applications of the first law: the first law of thermodynamics will help you to understand the applications in different cases like adiabatic process, constant volume process, cyclical process, free expansion.

### Exercise-Wise Discussion of Halliday Resnick and Walker Fundamentals of Physics Volume 1 Chapter 18 Temperature, Heat and The First Law of Thermodynamics

Module 1: Temperature

This module has only 3 questions in which you will have to find out the difference between the pressures in 2 thermometers, identifying the gas which is at higher pressure, finding the unknown temperature.

Module 2: The Celsius and Fahrenheit Scale

This module contains 4 questions in which you will have to find the temperature in Celsius scale, the temperature of 340 kelvin at a particular scale.

Module 3: Thermal Expansion

Module 3 contains 13 questions. You will be solving questions like what is the increase in the surface area, what is the diameter when the temperature rises, length of a material when the temperature decreases, percent change in density, identifying the type of metal, finding the coefficient of linear expansion.

Module 4: Absorption of Heat

This module contains 22 questions in which you will have to find the lowest possible temperature of a material like water, calculating the time to bring water or any other liquid from temperature A to temperature B, finding the molar specific heat, finding the numbers of moles in the sample, finding the mass of the material, the minimum amount of energy and calculating the energy transferred.

Module 5: The First Law of Thermodynamics

This module contains 7 questions in which you will have to find the work done while the pressure changes, calculating the net energy, the amount of energy transferred.

Module 6: Heat Transfer Mechanisms

This module contains 15 questions in which you will have to find the thickness of a material, the conduction rate, finding the rate at which the energy is lost or conducted, rate of energy.