If both mass and velocity of a ball are tripled, the kinetic energy is increased by a factor of:
a. 3.
b. 6.
c. 9.
d. 27.
d
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As a star's evolution approaches the Type II supernova, we find
A) photo disintegration of iron nuclei begins at 10 billion K to ignite the supernova. B) helium to carbon fusion takes at least 100 million K to start. C) the heavier the element, the higher the temperature to fuse it. D) the heavier the element, the less time it takes to make it. E) All of the above are correct.
That the Tharsis region on Mars has so few craters
A) suggests it is the youngest region on the planet. B) suggests it is at the center of a particularly strong magnetic field. C) is due to annual flooding and water erosion. D) proves tectonic activity is taking place. E) is due to the very low elevation of the region.
A capacitor having, C1, is connected to a battery until charged, then disconnected from the battery. A second capacitor, C2, is connected in parallel to the first capacitor. Which statements below are true?
Saturn's rotation is fast and differential, much like Jupiter's
Indicate whether the statement is true or false