A man screams in a long canyon and waits for the echo to come back to him. It takes 2.91 seconds for him to hear the echo of his yell. The sound has to travel down the canyon and back to reach his ears. How long is the canyon?

when the velocity of a mass on a spring is zero, the acceleration is at a maximum .

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

their crystal patterns have been disrupted by stress

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.