Exam 12: Temperature and Heat

A soft drink manufacturer claims that a new diet drink is "low Joule." The label indicates the available energy per serving is 6300 J. What is the equivalent of this energy in Calories (1 Calorie = 1000 cal)?

A 200.0-kg object is attached via an ideal pulley system to paddle wheels that are submerged in 0.480 kg of glycerin at 20.0 °C in an insulated container as shown. Then, the object falls through a distance of 5.00 m causing the paddle wheel to turn. Assuming all of the mechanical energy lost by the falling object goes into the water, determine the final temperature of the glycerin. The specific heat capacity of glycerin is 2410 J/ C^o).

Complete the following statement: When a substance undergoes fusion it

The coefficient of linear expansion of steel is 12 × 10^-6/C°. A railroad track is made of individual rails of steel 1.0 km in length. By what length would these rails change between a cold day when the temperature is -10 °C and a hot day at 30 °C?

Ryan places 0.150 kg of boiling water in a thermos bottle. How many kilograms of ice at -12.0 °C must Ryan add to the thermos so that the equilibrium temperature of the water is 75.0 °C?

A 2.00-kg metal block slides on a rough, horizontal surface inside an insulated pipe. After sliding a distance of 500.0 m, its temperature is increased by 2.00 °C. Note: Assume that all of the heat generated by frictional heating goes into the metal block. For this metal, the specific heat capacity is 0.150 cal/(g · C°). -What is the coefficient of sliding friction between the block and the surface?