In contrast to quiet eruptions, other volcanoes erupt explosively. Mount St. Helens, for instance, spewed lava high in the air when it erupted. Two things control the type of eruption: how much water vapor and other gasses are in the magma and whether the magma is basaltic or granitic. Basaltic magma tends to ooze out gently in a thin, quiet eruption, while granitic magma is thicker and becomes trapped inside the volcano's vents. Once the pressure grows enough to force out the magma, it explodes.
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Answer:
Parallel
Explanation:
An electric charge in a magnetic field will experience no force if the charge is moving parallel to the field.
Answer:
La distancia media de Venus al Sol es de 108.159.260,51 Km
La distancia media de la Tierra al Sol: 149.597.870,691 Km
La diferencia entre una y otra distancia media te dará el promedio de distancia de la Tierra a Venus: 41.438.618,181 Km.
Siendo la velocidad de la luz: 299.792,458 Km / seg
Divides: 41.438.618,181 Km / 299.792,458 Km / seg = 138,22433 segundos
138,22433 seg / 60 seg = 2,30374 minutos
Este tiempo es el que tarda la onda de radio en viajar del planeta Venus a la Tierra.
La velocidad de la onda de radio se conviene en considerarla igual al de la velocidad de la Luz en el vacÃo.
Explanation:
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Answer:
400m
Explanation:
From Newton's law of motion;
S = ut + 1/2 at2
Where U is initial velocity
a is acceleration
t is velocity hence;
S is distance covered
S = 20×10 + 1/2 × 4×(10)^2
= 200 + 200 = 400m
