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What is the speed of a wave with a wavelength of 0.5 m and a frequency of 20 Hz?
Wiki User
∙ 10y ago
The product of the two. Since hertz is equivalent to (1/sec), the answer of course is in meters/second.
Wiki User
∙ 10y ago
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How is instantaneous speed and average speed different?
Instantaneous speed means the speed at a specific instant, such as, 12:05:34 pm, August 16, 2011. We can get more instantaneous than that, so far I have only narrowed it down to a single second of time, but some measurements are done to a ten thousandth of a second, or even smaller instants of time; it depends what you are measuring (the decay and the movement of sub-atomic particles is measured to extremely small fractions of a second). Average speed involves the speed with which something is moving over some longer period of time. For example, while driving a car, your speed might vary between 30 mph and 50 mph, with perhaps an average of 43 mph.
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