Here is a question about this article: Capacitors, especially ceramic capacitors, and older designs such as paper capacitors, can absorb sound waves resulting in a microphonic effect. Vibration moves the plates, causing the capacitance to vary, in turn inducing AC current. Some dielectrics also generate piezoelectricity. The resulting interference is especially problematic in audio applications, potentially causing feedback or unintended recording. In the reverse microphonic effect, the varying electric field between the capacitor plates exerts a physical force, moving them as a speaker. This can generate audible sound, but drains energy and stresses the dielectric and the electrolyte, if any.
What is the answer to this question: What sort of current is induced when the capacitance of a capacitor is altered?
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So... AC current

Here is a question about this article: By the end of the decade a distinct genre of hard rock was emerging with bands like Led Zeppelin, who mixed the music of early rock bands with a more hard-edged form of blues rock and acid rock on their first two albums Led Zeppelin (1969) and Led Zeppelin II (1969), and Deep Purple, who began as a progressive rock group but achieved their commercial breakthrough with their fourth and distinctively heavier album, In Rock (1970). Also significant was Black Sabbath's Paranoid (1970), which combined guitar riffs with dissonance and more explicit references to the occult and elements of Gothic horror. All three of these bands have been seen as pivotal in the development of heavy metal, but where metal further accentuated the intensity of the music, with bands like Judas Priest following Sabbath's lead into territory that was often "darker and more menacing", hard rock tended to continue to remain the more exuberant, good-time music.
What is the answer to this question: What was the title of Deep Purple's hard rock 1970 album?
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So... In Rock

Here is a question about this article: North Carolinians enjoy outdoor recreation utilizing numerous local bike paths, 34 state parks, and 14 national parks. National Park Service units include the Appalachian National Scenic Trail, the Blue Ridge Parkway, Cape Hatteras National Seashore, Cape Lookout National Seashore, Carl Sandburg Home National Historic Site at Flat Rock, Fort Raleigh National Historic Site at Manteo, Great Smoky Mountains National Park, Guilford Courthouse National Military Park in Greensboro, Moores Creek National Battlefield near Currie in Pender County, the Overmountain Victory National Historic Trail, Old Salem National Historic Site in Winston-Salem, the Trail of Tears National Historic Trail, and Wright Brothers National Memorial in Kill Devil Hills. National Forests include Uwharrie National Forest in central North Carolina, Croatan National Forest in Eastern North Carolina, Pisgah National Forest in the northern mountains, and Nantahala National Forest in the southwestern part of the state.
What is the answer to this question: Where is the Uwharrie national Forest located?
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So...
central North Carolina