Which of the following is an example of chemical energy? a hot metal pan

an apple

turning on the TV

a roller coaster rolling down
HELP PLZ

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.