Possible Solutions to the Problem of Global Energy Crisis:
1. Move Towards Renewable Resources.
2. Buy Energy-Efficient Products.
There isn't a whole lot of info here to go on, but if they are matching fossils from different spots on the globe, it would most likely be proof of supercontinents such as Pangea.
Answer:
The resulting speed of the airplane is 150 Km/h
Explanation:
The airspeed of the plane is 120 Km/h due North. The wind came from West pointing to the East at 90 Km/h
Both speeds are acting in different directions, so they must be added as vectors. Both vectors and the resulting velocity (Vr) are shown in the image below
The magnitude of that velocity can be computed by using Pythagoras's theorem:



The resulting speed of the airplane is 150 Km/h
Answer:
screw and pulley
Explanation:
because they didn't have any of the other tools in that time
Answer:
The width is 
Explanation:
From the question we are told that
The wavelength is 
The width of the slit is 
The distance of the screen is 
Generally the central maximum is mathematically represented as

Here y is the width of the first order maxima which is mathematically represented as

substituting values


So

