No artificial ingredients
i only know that because my mom was vegan for two years
Answer:
A thermos bottle works well because:
A) Its glass walls are thin
Ruby, a variety of the mineral corundum is in the trigonal crystal system, with hexagonal scalenohedra crystals
Taking notes,because you can read back on what you learned
The amount of gravitational potential energy acquired by the rock is equal to:

where
m is the mass of the rock
g is the gravitational acceleration

is the increase in height of the rock
Substituting the data of the problem, we find

So, Natalie gave 220.7 J of energy to the rock.