Chapter L, Problem 19PS

Interpretation Introduction

Interpretation: The food that provide greater energy has to be given.

Concept Introduction:

Joule: The joule is related directly to the units used for mechanical energy.

Calorie: The calorie is an older energy unit.  It is defined as the energy transferred as heat that is required to raise the temperature of 1g of substance by one degree Celsius.

  $\text{1}\text{Calorie =}\text{4}\text{.184}\text{joules (J)}\text{.}$