Second law of physics. F = MA
200 = 25A
I believe you are capable of doing the rest
A mixture that appears to contain only one substance is a. homogenous mixture.
Answer:
270 mi/h
Explanation:
Given that,
To the south,
v₁ = 300 mi/h, t₁ = 2 h
We can find distance, d₁

To the north,
v₂ = 250 mi/h, d₂ = 750 miles
We can find time, t₂

Now,
Average speed = total distance/total time

Hence, the average speed for the trip is 270 mi/h.
an atom is chemically stable when its outer layer is completely filled with energy. im pretty sure this is right