After eating a 200 g bottle of yogurt, Bob decides to go for a run to burn off the extra energy. The yogurt provides 5.4 MJ kg-1, and Bob is able to raise his metabolic rate to 220 W while running. How long does he have to run?

After eating a 200 g bottle of yogurt, Bob decides to go for a run to burn off the extra energy. The yogurt provides 5.4 MJ kg-1, and Bob is able to raise his metabolic rate to 220 W while running. How long does he have to run?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter11: Energy And Its Conservation

Section: Chapter Questions

Problem 1STP

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Concept explainers

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.

Question

Chemical pathways by which living things function, especially those that provide cellular energy, such as the transformation of energy from food into the energy of ATP. Metabolism also focuses on chemical pathways involving the synthesis of new biomolecules and the elimination of waste.

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