PLS HELP ILL MARK BRAINLIEST A child is throwing stones at the center of a pool and would like to find the travelling speed of waves in water. Write an experimental design where the child can calculate the speed of wave.
Hint: Pool floor is built with foot long tiles.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Failure to accomplish erikson’s psychosocial task of late adulthood leads to despair. a. true b. false

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.