You have given a balloon an electric charge by rubbing it on your head. You hold the balloon between two of your friends, Steve and Joey, at the location shown below.
Steve
Joey
5
Whose hair will stand up more from the charged balloon, Steve or Joey?
Steve
Joey
I don't know yet

What is the length x of the side of the triangle below? (hint: use the cosine function)

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k