A container is filled with a mixture of helium (light molecules) and oxygen (heavy molecules) gases. A thermometer in the container reads 22°C. Which gas molecules have the greater average kinetic energy?
A) It is the same for both of the gases because the temperatures are the same.
B) The oxygen molecules do because they are diatomic.
C) The oxygen molecules do because they are more massive.
D) The helium molecules do because they are less massive.
E) The helium molecules do because they are monatomic.
A
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Which of the following best describes Pluto in terms of the general characteristics of terrestrial and jovian planets?
A) size and density similar to terrestrial planets; distance and composition similar to jovian planets B) size and solid surface similar to terrestrial planets; distance similar to jovian planets C) size and distance similar to terrestrial planets; gaseous surface and composition similar to jovian planets D) solid surface and density similar to terrestrial planets; temperature and composition similar to jovian planets E) solid surface and temperature similar to terrestrial planets; distance and density similar to jovian planets
The ________ phenomenon is an extremely energetic event which apparently occurs in the nuclei of massive galaxies during an early stage of their evolution
Fill in the blank(s) with correct word
Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches. A force of 4 pounds is exerted downward on piston 1, as shown
 The pressure on A1 in psi is a. 0.25. b. 0.4. c. 4. d. 10. e. 40.The statement "It will be 87°F today" is an example of what
What will be an ideal response?