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What factors might influence the descent angle of a subducted plate?
Wiki User
∙ 11y ago
The rates of convergence and age of the lithosphere are the two predominant factors that affect the descent angle at a subduction zone.
Wiki User
∙ 11y ago
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What is the rate of descent of a plane that is traveling at 278 km per hour at a 12.9 degree angle?
We have to make a few assumptions first. We assume the angle provided (12.9 degrees) is the plane's attitude, that is, the angle with respect to the horizontal. We also assume the plane's nose is angled toward the ground because you asked for rate of descent (not dissent). We also assume that all of the plane's airspeed is in the same direction as its attitude (which is often not the case in actual flight, where an aircraft's velocity vector may have a different angle than the angle the plane makes with the ground). So, we have an airplane that's traveling at 278 km per hour at an angle that is -12.9 degrees to the horizontal. (The minus sign indicates a downward direction.) That describes a vector having vertical and horizontal components. We are interested in the vertical component, which is given by the formula Vy = Vsin(theta) = 278sin(-12.9) = -62.1. The rate of descent, therefore, is 62.1 km/hr. It is not necessary to use the minus sign if you say "rate of descent," because the minus sign is implied. If you are asked what the vertical velocity is, then you must use the minus sign to indicate whether it's positive (ascending) or negative (descending).
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When oceanic and continental crust collide at a subduction zone one plate is forced under the other The angle at which the subducting plate descends is due to what factors?
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