Question

Chapter 13 Temperature and Kinetic Theory D) As shown in the figure, a bimetallic strip, consisting of metal G on the top and metal on the bottom, is rigidly attached to a wall at the left. The coefficient of linear thermal expansion for metal G is greater than that of metal H. If the strip is uniformly heated, it will A) curve upward. B) curve downward. C) remain horizontal, but get longer. D) remain horizontal, but get shorter. E) bend in the middie. 2) Consider a flat steel plate with a hole through its center as shown in the figure. When the temperature of the plate is increased, the hole will A) expand only if it takes up more than half the plate's surface area. B) contract if it takes up less than half the plate's surface area. C) always contract as the plate expands into it. D) always expand with the plate. E) remain the same size as the plate expands around it. 3) Oxygen condenses into a liquid at approximately 90 K. What temperature, in degrees Fahrenheit, does this correspond to? A)-193°F B) -217°F C) -265°F D) -297°F 4) The coefficient of linear expansion of steel is 12 x 10-6 K-1. What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K from winter to summer? A) 1.2 cm B) 1.4 cm C) 1.6 cm D) 1.8 cm E) 2.0 cm

Answer 1

cure dounuaud F247-4 F 1-2 cm