Calculate the change in potential energy of 8 million kg of water dropping 50 m over niagara falls

Potential energy=mass*acceleration due to gravity*height

= 8 000 000 * 9.8 * 50

= 3.92 * 10^9

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada