The mass of Pluto is 1.25 × 1022 kg and its radius is 1.14 × 106 m. What is the value of g at the surface of Pluto? G = 6.67 x 10-11 N•m2/kg2
A) 0.642 m/s2
B) 9.81 m/s2
C) 1.62 m/s2
D) 3.72 m/s2
E) 1.40 m/s2
A
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Which moon of Saturn has the surface with the widest range of ages? Why?
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A container is filled with a mixture of helium (light molecules) and oxygen (heavy molecules) gases. A thermometer in the reads 22°C. Which gas molecules have the greater average speed?
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.
To find the equivalent resistance of the combination of resistors shown below by the method of possibly repeated applications of combining resistors in series and /or combining resistors in parallel, the first step would be which of the following?
a.
Combine the 6.0 ? and the 7.0 ? in series.
b.
Combine either the 4.0 ? and the 10.0 ? in parallel or the 7.0 ? and the 10.0 ? in parallel first, since either could be the first step with the other the second step.
c.
Combine the 4.0 ? and the 10.0 ? in series.
d.
Combine the 6.0 ?, the 4.0 ?, and the 10.0 ? in series in a single step.
The oceanic conveyor is often referred to as thermohaline circulation. Explain why this is an appropriate name
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