Physics 011

Chapter 13: Temperature and Kinetic Theory
Practice Questions

Quiz#13

 1 To the nearest degree, what is absolute zero on the Celsius scale? 0oC 32oC 273oC -273oC 2 To the nearest degree, if room temperature is 65oF what is it in oC? 18 36 59 5 3 To the nearest degree, if it is hot outside at 100oF what is it in oC? 5oC 20oC 38oC 56oC 4 What is -40oC on the Fahrenheit scale? -40oF -72oF -104oF 5oF 5 To the nearest degree, what is absolute zero on the Fahrenheit scale? -491oF -460oF -373oF -250oF 6 The Rankine temperature scale bears the same relationship to the Fahrenheit scale as the Kelvin does to the Celsius. To the nearest degree, what is the freezing point in Rankine? 273 R 460 R 492 R 672 R 7 Temperature one is 10oC and the second temperature is 30oC. What is the average temperature in Kelvin? 283 K 293 K 303 K 566 K 8 What is the difference in Co of the two temperatures, 35oF and 62oF? 15 Co 37 Co 49 Co None of the above. 9 If the temperature difference in Celsius is 50oC, what is the difference in Fahrenheit? 28 Fo 122 Fo 60 Fo 90 Fo 10 Which of the following temperatures is the highest? T1= 25oC, T2= 72oF, T3= 290 K, T4=510 R T1 T2 T3 T4 11 The coefficient of thermal (linear) expansion,a, for aluminum is 25x10-6(Co)-1. What is the change in length of a 1 meter bar if the temperature increases 30 Co? .25 mm .50 mm .75 mm 1 mm 12 The coefficient of thermal expansion for iron is 12x10-6(Co)-1. Which will expand more as temperature increases, a 2 meter iron bar or a 1 meter aluminum bar? aluminum iron Both the same. 13 A 1 meter diameter hole is cut into a aluminum sheet and the temperature is increased by 100 Co. What is the new diameter of the hole? .9975 m .4989 m 1.0025 m .5013 m 14 An aluminum hollow metal sphere with a radius of 1 meter is exposed to a 200 Fo temperature increase. What is the ratio of the new volume to the old one? 1.008 1.015 1.020 1.025 15 The coefficient of volume expansion, beta, for Pyrex is 9x10-6(Co)-1 and the coefficient of thermal expansion, alpha, for ethyl alcohol is 1100x10-6(Co)-1. If the alcohol fills 50% of a Pyrex bottle what % will it occupy if the temperature is increased by 30 Co? 50 % 51 % 52 % 53 % 16 If 10 moles of a gas has a gauge pressure of 2 atm and a temperature of 200 K, what is its volume? .055 m3 .082 m3 5533 m3 8315 m3 17 10 moles of a gas has a gauge pressure of 2 atm and a temperature of 200 K. If the temperature is doubled, what will be the new gauge pressure in atm? 3 atm 4 atm 5 atm 6 atm 18 10 moles of a gas has a gauge pressure of 2 atm and a temperature of 200 K. If the volume of the gas is doubled and the gauge pressure dropped in half (1 atm), what is the new temperature? 200 K (it does not change) 267 K 300 K 400 K 19 10 moles of a gas has a gauge pressure of 2 atm and a temperature of 200 K. How many molecules are there in the gas? 6.02x1024 6.02x1023 6.02x1022 Unknown 20 10 moles of a gas has a gauge pressure of 2 atm and a temperature of 200 K. If the molecules are hydrogen (atomic mass =1.008 u), what is the mass of the gas? 10.08 g 20.16 g 10.08 kg 20.16 kg 21 If temperature is measured in J/molecule (which is what it measures) instead of kelvin, what would be the value of k, Boltzmann's constant? 2/3 2/3 J/K 3/2 J/K 1.38x10-23 J/K 22 If temperature is measured in J/molecule (which is what it measures) instead of kelvin and if we call the temperature scale the G scale what would be the temperature of the freezing point of water? 0 G 2.1 G 5.7 G 5.65x10-21 G 23 What would be the conversion between the G scale (question 22) and the Celsius scale. T(C)=T(G)-273 T(C)=((2/3)*T(G)/k)-273 T(C)=((2/3)*T(G))+273 T(C)=(T(G)/k)+273 24 Six molecules have the speeds (in arbitrary units) of 2, 2, 4, 8, 4, 10. What is their average speed? 3 4 5 6 25 Six molecules have the speeds (in arbitrary units) of 2, 2, 4, 8, 4, 10. What is the rms speed (to the nearest unit) of the molecules? 3 4 5 6