Answer:
A higher hill will give more potential energy, and a lower hill will give less.
Explanation: Gravitational potential energy is the energy stored in an object based on its height and mass. The potential energy in an object increases as its elevation increases.
Answer:
B. Reese's yard
Explanation:
Because Reese's yard is full of rocks, rock's don't absorb water, while Chris' yard is only soil, which will make his yard absorb water quicker.
Sound waves are <em><u>longitudinal</u></em> waves in which particles travels along with the direction of wave and hence creates regions of high pressure and low pressure also known as <em><u>compressions</u></em> and <em><u>rarefactions</u></em>.
So, the correct Option will be :
=》D. All of the above.
M ....6,022*10^22 molecules
2,30g .......3,01*10^22 molecules
or 1 mole has 6,022*10^22 molecules so (2,30/Molar mass) = nr of moles with 3,01*10^22 molecules
which will lead to the same thing.
M= 4,6