Ten girls, of mass m=35kg each, initially stand at different points on the rim of a merry-go-round (essentially a disk that spins).  The merry-go-round has a moment of inertia of 800 kgm^2 and a radius of 4.0m.  The merry-go-round has an initial angular velocity of 0.20 rad/s and rotates freely on frictionless bearings.  On a signal the girls all start to move toward the center of the merry-go-round until they reach a distance of 1.5m from the center, where they stand again.  Find the new angular velocity of the system (in rad/sec).

Which of the following interventions targets a population at risk for a particular disease or condition?

Which of the following believed that disease was the cause of poverty?

By the year 2000, tuberculosis, gastroenteritis, and diphtheria fell of the list of top 10 causes of death. Which of the following is now on the list that was not on the list in 1900?

Edward Jenner was the first to use which of the following to fight disease?

Which of the following is one of the three main sources for overall healthcare expenditures?

Visiting a physician on a regular basis is considered which of the following types of care?

Widespread use of the MAPP (Mobilizing for Action through Planning and Partnerships) model for assessing community public health needs began in the late 1950s.

As of the year 2000, what is the leading cause of death in the United States?

According to data collected through the National Health Interview Survey, how many years does the average American spend living with a chronic disease?