Suppose the average thermal speed of molecules in a gas at room temperature (22°C) is 
. If we “double” the gas’s temperature (to 44°C), what is the average molecular speed now? Select the closest response.
A. About the same
B. 
C. 
D. 
E. 
A. About the same
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The solar system model of Copernicus is known as the ______________ model
Fill in the blank(s) with correct word
Einstein rejected the classical idea that space and time are
A) two parts of a whole. B) connected to each other. C) independent of each other.
If 150 kcal of heat raises the temperature of 2.0 kg of a material by 400°F, what is the specific heat capacity of the material?
A) 1.35 kcal/kg ? °C B) 0.75 kcal/kg ? °C C) 0.34 kcal/kg ? °C D) 0.19 kcal/kg ? °C
Which of the following statements is true of green grass?
A) It absorbs red light and reflects green light. B) It absorbs red light and emits green light. C) It transmits all colors of light except green. D) It means the lawn is healthy.