A mountain slope and a skier make up a closed system with 21,800 J of energy. When the skier starts her descent down the mountain, the mechanical
energy of the system is 19,500 J. By the time she reaches the bottom, the
system's mechanical energy has fallen to 18,230 J. How much of the total
energy is transformed into thermal energy?

what is the actual question though?

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.