An inflatable backyard swimming pool is being filled from a garden hose with a flowrate of 0.12 gal/s. (a) If the pool is 8 ft in diameter, determine the time rate of change of the depth of the water in the pool.

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=