With volume and molar quantity held constant, by what factor does the absolute temperature change for an ideal gas when the pressure is three times bigger?
a. 0.3
c. 5.0
b. 3.0
d. 25.0
B
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The ratio of the kinetic energy of object A to the kinetic energy of the object B is 2:1. The mass of object A is 2.0 kg and the mass of object B is 4.0 kg. If object A has a speed of 4.0 m/s, what is the speed of object B?
A) 8.0 m/s B) 6.0 m/s C) 4.0 m/s D) 1.4 m/s E) 2.0 m/s
A 4.0-kg cylinder of solid iron is supported by a string while submerged in water. What is the force that the string exerts on the cylinder? The density of iron is 7860 kg/m3 and that of water is 1000 kg/m3
A) 2.5 N B) 20 N C) 24 N D) 34 N E) 40 N
An object that is negatively charged will
a. attract a rubber rod stroked with fur. b. attract a glass rod stroked with silk. c. be polarized. d. none of these
In this figure a light ray travels between air and glass. Which way did the light ray go?
 a. from the air into the glass b. from the glass into the air c. either A or B. d. None of the above—this depicts an impossible situation.