Is it possible to determine the planet's mass from the star's velocity curve?
What will be an ideal response?
yes, by measuring both the star's orbital period and its change in velocity over the orbit
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Galileo found the rotation period of the Sun was approximately:
A) a day. B) a week. C) a month. D) three months. E) a year.
What is the difference between energy and power?
A) Power is the rate at which energy is used, so its units are a unit of energy divided by a unit of time. B) Power is measured in joules and energy is measured in watts. C) Power is used to describe energy of light, while the term energy has a broader meaning. D) There's no difference: Energy and power are different names for the same thing.
In 1851 Jean Bernard Leon Foucault demonstrated the rotation of the Earth using a pendulum 11.0 m long, which was set up in the Paris Observatory. What was the period of oscillation of the pendulum?
A) 6.65 s B) 5.63 s C) 1.79 s D) 2.12 s E) 2.58 s
Complete the following sentence: "The moment of inertia of an object
1.depends on the rotational speed of the object." 2.will be greater for a larger-massed object than for a smaller-massed object." 3.is not a function of the object's mass." 4.is a function of the axis about which the object is spun."