Which of these best explains the ability of small insects to walk on the surface of still water?

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

Coal contains energy. a. light b. kinetic c. chemical d. mechanical

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?