Answer:
false, because a phase change occurs physical changes when matter changes its energy state.
Earth's original atmosphere was probably just hydrogen and helium, because these were the main gases in the dusty, gassy disk around the Sun from which the planets formed. The Earth and its atmosphere were very hot.
Question
What was the change in potential energy of the sheep?
Answer:
1962(m) J
Explanation:
Potential energy is given by
PE=mgh
Change in potential energy is given by
∆PE=mg(h2-h1)
Where ∆PE is the change in potential eneegy, g is acceleration due to gravity, h2 is final height and h1 is the initial height.
Substituting 9.81 m/s² for g, 1200 m for h2 and 1000 m for h1 then
∆PE=m*9.81(1200-1000)=1962m Joules
Since we are not given the mass of rhe sheep, the answer will be 1962(m) Joules
No chande in mass becouse of the change in gravitational force do not effect in mass
Answer:
Chemical elements, a dense lustrous yellow precious metal of group.
