It IS <span>PE = (1200 kg)(9.8 m/s²)(42 m) = 493,920 J </span>
Answer:
There are 4 Aluminum atoms in 4Al(OH)3.
It depends on the size of the cube, but you could use a ruler for almost any size, or if it is small enough, you could use a caliper to get a very precise measurement.
Answer:
D. Freezing water and burning coal
Explanation:
Answer:
When charged particles from the sun strike atoms in Earth's atmosphere, they cause electrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights.
Explanation:
