The piont of initial perturbation. We need at lest three seismographic stations
Hi!
I agree because there are many different people and everybody has their own opinion, but because of that sometimes we need to take advantage of them to make something possible for example:
If I am too lazy to get some paper I tell my Little brother ¨can you please go for me?¨
Hoping I helped! :D
Answer:
A sheave keeps an elevator from moving side to side and further details in discussed below in detail.
Explanation:
A sheave is a lifter with a grooved edge surface, at the head of the elevator shaft. ... The cords that uplift the car are also joined to a counterweight, which stretches down on the other front of the sheave [and typically estimates about the mass of the car itself plus 42–50 percent of the complete weight it can sustain.
