Need getting google account back, big issue

Which of these is a benefit of social networking? oa. hiding your true identity from friendsob. avoiding talking to people in personoc. spending time with friends instead of studyingod. connecting with new people

Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?

20 points archie wants to use a reflector as he photographs a newlywed couple. what would he consider in his choice? a. shadow and sunny b. homemade and professional c. lamps and boards d. incident and reflected e. neutral density and enhancement