Answer:
evaporation, melting, freezing
Explanation:
matter is a solid, gas, or liquid
evaporation turns a liquid to gas
melting changes a solid to liquid
freezing changes a liquid to a solid
Answer:

Explanation:
First calculate the mass of the asteroid. To do so, you need to find the volume and know the density of iron.
If r = d/2 = 645ft, then:


In order to find force, use Newton's universal law of gravitation:

Where,
G= the gravitational constant:


Answer:

Explanation:
Using the Gauss Law, we obtain the electric Field for a uniform large line of charge:


We calculate the potential difference from the electric field:

I'm sorry if this is wrong but I think it's 2.5 net