According to the law of charges, unlike charges ______________
Fill in the blank(s) with correct word
attract
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Suppose we imagine the Sun to be about the size of a grapefruit. Which of the following describes the size and distance of Earth on the same scale?
A) Earth is the size of a tip of a ballpoint pen about 1 meter away from the Sun. B) Earth is the size of a golf ball about 1 meter away from the Sun. C) Earth is the size of a tip of a ballpoint pen about 15 meters away from the Sun. D) Earth is the size of a golf ball about 15 meters away from the Sun. E) Earth is the size of a marble about 25 miles away from the Sun.
A meteor is
A) an irregularly shaped body, mostly found orbiting between Mars and Jupiter. B) a chunk of space debris orbiting the Earth. C) a chunk of space debris that has struck the ground. D) an icy body with a long tail extending from it. E) a streak of light in the atmosphere.
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.
Photocopiers make use of the photoelectric effect
Indicate whether the statement is true or false