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Get Full Access to College Physics - 7 Edition - Chapter 2 - Problem 2.3
Get Full Access to College Physics - 7 Edition - Chapter 2 - Problem 2.3

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# Two boats start together and race across a 60-km-wide

ISBN: 9780495113690 154

## Solution for problem 2.3 Chapter 2

College Physics | 7th Edition

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College Physics | 7th Edition

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Problem 2.3

Two boats start together and race across a 60-km-wide lakeand back. Boat A goes across at 60 km/h and returns at60 km/h. Boat B goes across at 30 km/h, and its crew,realizing how far behind it is getting, returns at 90 km/h.Turnaround times are negligible, and the boat that com-pletes the round trip first wins. (a) Which boat wins andby how much? (Or is it a tie?) (b) What is the average ve-locity of the winning boat?

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Chapter 16: Temperature and Heat  Heat: The energy transferred between objects because of a temperature difference o When the transfer of heat between objects in thermal contact ceases, they are in thermal equilibrium  Zeroth law of thermodynamics: if object A is in thermal equilibrium with object B, and object C is also in thermal equilibrium with object B, then objects A and C will be in thermal equilibrium if brought into thermal contact  Celsius scale: o Water freezes at 0 o Water boils at 100  Fahrenheit Scale: o Water freezes at 32 o Water boils at 212  Celsius Fahrenheit conversions  The Kelvin scale is similar to the Celsius scale, except that the Kelvin scale has its zero at absolute z

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