Tectonic plates interactions are of three different basic types: Divergent boundaries are areas where plates move away from each other, forming either mid-oceanic ridges or rift valleys. <span />
Answer:
True
Explanation:
When a nuclear power plants ends its operating life, it is necessary to dispose correctly all the radioactive material left from the operations of the power plant.
In fact, apart from the fuel rods (which contain the uranium that is the fuel of the nuclear reactions), other materials of the core (such as the vessel) becomes radioactive due to the prolonged exposure to the products of nuclear reactions in the core.
As a result, all these materials remain radioactive for very long time (hundreds or thousands of years). It is therefore important to dispose them correctly, in proper sealed containers which are able to shield the radiation emitted by these radioactive element (alpha, beta and gamma radiation).
Therefore, "waste from nuclear power plants must be disposed of in radioactively shielded storage containers" is a correct statement.
Answer:
D. 825 km/hr westward
Explanation:
In order to solve the problem, we should define a positive and a negative direction for the velocities.
Let's take positive (+) as westward and negative (-) as eastward.
1) Relative to the ground, the air is moving eastward at 82 km/h, so the air velocity is 
2) Relative to the air, the airplane is moving westward at 907 km/h, so its velocity is 
In the reference system of the ground, the velocity of the airplane will be given by the velocity of the airplane in the reference system of the air (v) plus the velocity of the reference system of the air relative to the ground (v'):
Therefore, substituting:
And the sign (+) means its direction is westward.
Answer:
1.25 m
0.5 s
Explanation:
Given:
v₀ = 5 m/s
v = 0 m/s
a = -10 m/s²
Find: Δy
v² = v₀² + 2aΔy
(0 m/s)² = (5 m/s)² + 2 (-10 m/s²) Δy
Δy = 1.25 m
Find: t
v = at + v₀
(0 m/s) = (-10 m/s²) t + (5 m/s)
t = 0.5 s
