A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?

500 m/s

Explanation:

Speed of wave = Frequency × Wavelength

Speed of wave = 50 Hz × 10 m

Therefore the speed is 500 m/s

with 5 seconds, no, but over time if the police car stays at 65m/s ad the speeding car stays at 60, then obviously yes, but the answer to your question would be, no.

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the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary