Explanation:
Calcium carbonate is a molecule that contains one atom of calcium, one atom of carbon, and three atoms of oxygen.
Answer:
G. It will take twice as long.
Explanation:
Let's call
the original speed of the plane and
the distance between Dallas and Pensacola. The time the plane originally takes to complete the flight is

In this problem, we are told that the plane encounters wind moving at half of its speed:
, in the opposite direction. This means that the new speed of the plane is

And so, the time the plane takes now to complete the flight is

So, the plane takes twice the time as before.
Answer:
1170 m
Explanation:
Given:
a = 3.30 m/s²
v₀ = 0 m/s
v = 88.0 m/s
x₀ = 0 m
Find:
x
v² = v₀² + 2a(x - x₀)
(88.0 m/s)² = (0 m/s)² + 2 (3.30 m/s²) (x - 0 m)
x = 1173.33 m
Rounded to 3 sig-figs, the runway must be at least 1170 meters long.