Which has a longer period an ocean wave
Which has a longer period: an ocean wave or the low note on a piano? Explain.
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A 1200-kg automobile travels at a speed of 12 m/s.
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A Cessna aircraft has a lift-off speed of 132 km/h. What minimum constant acceleration does this require if the air craft is to be airborne after a take-off run of 215m?
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