In which one of the following locations can a person hear the echo of a sound?
*a. *less than 16.6 meters in front of the reflecting surface
*b. *at least 33.2 meters behind the reflecting surface
*c. *less than 33.2 meters behind the reflecting surface
*d. *at least 16.6 meters in front of the reflecting surface

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What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.