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?
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
