the potential energy of a 40-kg cannon ball is 14000 j. how high was the cannon ball to have this much potential energy? round off your answer to two decimal places.

Iknow this isn't a question, but is there someway to ask a question under public safety or is there no category for it? i don't know if i'm overlooking it or not.

Nathan is an ecologist. he’s studying the effect of secondary consumers on primary consumers. his current research focuses on a population of blue jays and crows. they eat caterpillars and mice. if the number of blue jays increases, what are the likely effects on other populations? 1the number of crows will increase. 2the number of mice will decrease. 3the number of mice will remain the same. 4the number of caterpillars will decrease.

Blank is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound