Learning goal: to understand the parallel-axis theorem and its applications to solve many problems about rotational motion, it is important to know the moment of inertia of each object involved. calculating the moments of inertia of various objects, even highly symmetrical ones, may be a lengthy and tedious process. while it is important to be able to calculate moments of inertia from the definition (i

earth's neighboring galaxy, the andromeda galaxy, is a distance of 2.54×107 light-years from earth. if the lifetime of a human is taken to be 70.0 years, a spaceship would need to achieve some minimum speed min to deliver a living human being to this galaxy.

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a self-report inventory personality assessment is not very reliable for a psychological test because a patient doing the assessment may exaggerate or under-report in the answers. also, people will tend to be high on desirable behaviors and low on undesirable things.