35 Which one of the following situations is a direct application of the Zeroth Law of Thermodynamics? A) Block A has twice the temperature of block B before they are brought into contact. Upon contact, heat flows from block A to block B. B) A sample of gas within a cylinder with a piston is held at constant temperature and pressure while it is allowed to expand. During this process, the gas absorbs heat from its surroundings. C) The motor of a refrigerator uses electric energy to remove heat from inside the refrigerator and transfer it to the room. D) A physicist removes energy from a system in her laboratory until it reaches a temperature of 3 x 10-10 K, a temperature very close to (but still greater than) absolute zero. E) A thermometer is calibrated by placing it in an ice water bath within an adiabatic container until the thermometer is in thermal equilibrium with the ice water. 36. The coefficient of linear expansion of steel is 12 x 10 IC". 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? A) 0.62 cm B) 24 cm C) 48 cm D) 480 cm E) 620 cm

35 Which one of the following situations is a direct application of the Zeroth Law of Thermodynamics? A) Block A has twice the temperature of block B before they are brought into contact. Upon contact, heat flows from block A to block B. B) A sample of gas within a cylinder with a piston is held at constant temperature and pressure while it is allowed to expand. During this process, the gas absorbs heat from its surroundings. C) The motor of a refrigerator uses electric energy to remove heat from inside the refrigerator and transfer it to the room. D) A physicist removes energy from a system in her laboratory until it reaches a temperature of 3 x 10-10 K, a temperature very close to (but still greater than) absolute zero. E) A thermometer is calibrated by placing it in an ice water bath within an adiabatic container until the thermometer is in thermal equilibrium with the ice water. 36. The coefficient of linear expansion of steel is 12 x 10 IC". 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? A) 0.62 cm B) 24 cm C) 48 cm D) 480 cm E) 620 cm