When two objects of unequal mass orbit each other, the center of mass is ____
a. at the center of the more massive object
b. at the center of the least massive object
c. half way between the centers of each object
d. always closer to the less massive of the two objects
e. always closer to the more massive of the two objects
e
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Which of the following is not a method astronomers use to determine the physical conditions inside the Sun?
A) observing x-ray images of the solar interior using satellites B) building mathematical models that use the laws of physics C) detecting solar neutrinos generated in the Sun's core D) measuring Doppler shifts to observe solar vibrations
It is a well-known fact that water has a higher specific heat capacity than iron. Now, consider equal masses of water and iron that are initially in thermal equilibrium. The same amount of heat, 30. calories, is added to each
Which statement is true? A) They remain in thermal equilibrium. B) They are no longer in thermal equilibrium; the iron is warmer. C) They are no longer in thermal equilibrium; the water is warmer. D) It is impossible to say without knowing the exact mass involved and the exact specific heat capacities.
The value of an object's gravitational potential energy depends on the ______________
Fill in the blank(s) with correct word
An 83 lbm cast iron bracket is hung from a wire and a spring weigh scale as shown. What would be the reading of the scale and what is the apparent density of the bracket. Assume the density of the iron is 535 lbm/ft^3 and the density of water is 62.4 lbm/ft^3.
