Contrast the internal structure of a planet like Jupiter with that of a typical terrestrial planet in as many ways as possible
What will be an ideal response?
Jupiter's structure as one moves toward the center is increasing density of hydrogen with some helium, eventually turning liquid, then metallic, with a rocky core at the center. Terrestrial planets are rocky, growing molten as you go down, with a core of iron. The iron core is molten on the outside and solid in the center.
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The number of joules in 1 kilocalorie is
A) 4.19. B) 41.9. C) 4190. D) 1054.
Three systems are constructed from identical springs and masses as shown
Potassium-40 decays to argon-40 has a half-life of 1.25 billion years. Suppose you find a rock that has only 1/8 of its original potassium-40 still remaining. How old is the rock?
A) 3.75 billion years B) 5.25 billion years C) 2.5 billion years D) 1.25 billion years E) 4.5 billion years
A meteoroid, heading straight for Earth, has a speed of 14.8 km/s relative to the center of Earth as it crosses our moon's orbit, a distance of 3.84 × 108 m from the earth's center
What is the meteroid's speed as it hits the earth? You can neglect the effects of the moon, Earth's atmosphere, and any motion of the earth. (G = 6.67 × 10-11 N • m2/kg2, Mearth = 5.97 × 1024 kg) A) 18.5 km/s B) 21.5 km/s C) 32.4 km/s D) 87.3 km/s