When a ball rolls down a hill, what energy conversion occurs? O A. Kinetic energy to potential energy O B. Potantial energy to chemical energy O C. Potential energy to kinetic energy O D. Chemical energy to kinetic energy​

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel