1 point 3. A delivery man carries a 5.0-kg box up a flight of stairs 4.0 m above the
ground. How much work was done on the box by the man? Remember that
he is countering gravity which acts downward with an acceleration of 9.8
m/s^2.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

0.11 m/s and 0.28 m/s should be correct

snell's law

refractve index = sin incidence / sin refraction

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