What type of eruption does a composite volcano have?
What will be an ideal response?
Explosive
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When two objects of unequal masses orbit each other, the center of mass is
a. at the center of the more massive object. b. at the center of the least massive object. c. half way between the centers of each object. d. always closer to the less massive of the two objects. e. always closer to the more massive of the two objects.
The names of the Martian moons, Phobos and Deimos, mean ______________ and ______________
Fill in the blank(s) with correct word
Compressive stress causes rocks to buckle and fold. In a syncline fold, the rocks at the fold axis (the core) are
A) younger than those away from the axis. B) older than those away from the axis. C) more deformed than those away from the core. D) less deformed than those away from the core.
A 6.0-kg object moving 5.0 m/s collides with and sticks to a 2.0-kg object. After the collision the composite object is moving 2.0 m/s in a direction opposite to the initial direction of motion of the 6.0-kg object. Determine the speed of the 2.0-kg object before the collision.
A. 15 m/s B. 7.0 m/s C. 8.0 m/s D. 23 m/s E. 11 m/s