Which one of the following is not an example of work being done?
a. the moon orbiting earth
b. pushing a box from the bottom of a hill to the top of the hill
c. pulling a sled across a field covered with snow
d. lifting a book bag off the floor

In the developed world, women are increasingly more likely to delay childbirth until their mid- to late- twenties or long because

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

The blue segment below is a diameter of oo. what is the length of the radius of the circle?