100 J
Explanation:
multiply the force by the distance
20 N x 5 meters = 100 J
please mark brainliest
The time for the echo to return is directly proportional to the distance. vw = fλ. In a given medium under fixed conditions, vw is constant, so that there is a relationship between f and λ; the higher the frequency, the smaller the wavelength.
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Answer:
speed = distance/time
Explanation:
speed = 150/30
speed =5m/s
you were running fast .....5m/s is a good speed
Around 70-72% of earth’s surface is covered in water (most of it is salt water).
Hope this helps.
