Answer:
Neutral atom means the number of protons is equal to the number of electrons.
Explanation:
Change in state(from liquid to solid) and change in colour I believe.
Answer:
I answered Number 4 (Solids and Elasticity)
Explanation:
solids and elasticity
All that business about the crane and the rope and the falling
is only there to confuse us.
The piano ended up 5 meters above the ground.
Potential energy = (mass) (gravity) (height)
= (200 kg) (9.81 m/s²) (5 m)
= (200 · 9.81 · 5) (kg-m²/s²)
= 9,810 joules .
