Which would cause a more serious burn: 30 g of steam or 30 g of liquid water, both at 100 C; and why is this so? Option 6 Steam, because of its specific heat capacity. Either one would cause a burn of the same severity since they are both at the same temperature. Water, because its specific heat is greater than that of steam. Water, because it is denser than steam. Steam. because of its latent heat of vaporization. 000 O 00 Complete the following statement: Young's modulus cannot be applied to O a stretched wire. 0 a stretched rubber band. 0 a compressed rod. 0 a bending beam. 0 a compressed liquid. 0 Option 6 What is the final temperature of * a 5 9 sample of steam initially at 100 C when it loses 2780 calories of heat? A copper bar is heated to 300 C * '- and is then clamped rigidly between two fixed points so that it can neither expand nor contract. If the breaking stress of Copper is 2.3 x10 "8 Pa , at what temperature will the bar break as it cools? a = 17 x10-6/ K Y =11 x10"1OPa Which one of the following * . statements concerning Hooke's law is false? 0 O O O O Hooke's law relates stress and strain. Hooke's law is valid only for springs. Hooke's law can be verified experimentally. Hooke's law can be applied to a wide range of materials. Hooke's law is valid only within the elastic limit of a given material. Heat is added to a substance, but * * its temperature does not rise. Which one of the following statements provides the best explanation for this observation? O 0000 The substance must be a non-perfect solid. The substance has unusual thermal properties. The substance must be cooler than its environment. The substance must be a gas. The substance undergoes a change of phase. The operating temperature of a tungsten filament in an incandescent lamp is 2177 C and its emissivity is 0.30. Find the surface area ( in m"2 ) of the filament of a 25- watt Eamp. StefanBoltzmann constant = 5.67 x10"8 W/ m"2 K"4 O 1.96x10A5 O 4.08x10\"5 O 5.99x10"-5 O 6.54x10A-5 Three thermometers are in the * same water bath. After thermal equilibrium is established, it is found that the Celsius thermometer reads 0 C, the Fahrenheit thermometer reads 12 F, and the Kelvin thermometer reads 273 K. Which one of the following statements is the most reasonable conclusion? 0 All three thermometers are incorrect. O The Kelvin thermometer is incorrect. The Fahrenheit thermometer is incorrect. The Celsius thermometer is incorrect. The three thermometers are at different temperatures. 000