Aball was dropped from a height of 50 m. simultaneously another ball was thrown straight up from a point directly below. the two balls met half way between their original positions. estimate the original speed of the lower ball (g=10m/s^2)

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z