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Which kind of electromagnetic radiation is used in common Doppler radar systems?
Answer
radio waves
A Doppler fetal monitor is used to detect the heartbeat of what?
Answer
a fetus
The Doppler effect changes observed frequency because of what kind of motion between source and observer?
Answer
relative motion
When a sound source moves toward a listener, the observed pitch generally becomes what?
Answer
higher
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In which Austrian city was Christian Doppler born?
Answer
Salzburg
What was Christian Doppler's nationality?
Answer
Austrian
Which Norwegian businessman helped promote salmon sushi in Japan through Project Japan?
Answer
Bjørn Eirik Olsen
The word “sushi” comes from an archaic Japanese term meaning what taste?
Answer
Sour-tasting