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Poll
Which is the WORST study break activity?
Snacking on junk food
Taking a nap
Media-related activities (TV, video games, browsing the web)
Excessive caffeine
Huge meals
Other
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Previous poll results: Which test writing hack do you use?
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ppk
wrote...
Valued Member
On Hiatus
Posts: 3561
Credits: 628
5 years ago
Sound vibrations with frequencies less than 20 Hz are called
A) infrasonics.
B) ultrasonics.
C) supersonics.
D) infrared.
E) megasonics.
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1 Reply
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Answer accepted by topic starter
wrote...
Administrator
Posts: 20376
Credits: 1691
5 years ago
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