Which of the following is an example of a longitudinal wave?

a. sound wave in air
b. wave traveling in a string
c. both a and b
d. neither a nor b


a

Physics & Space Science

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Consider a particle of mass m and rest mass mo. Which of the following is the correct expression for the kinetic energy of such a particle?

A) mo v2/2 B) m v2/2 C) m c2 - mo c2 D) 1/2(m c2 - mo c2) E) mo c2 + mo v2/2

Physics & Space Science

What is meant by an incompressible material?

What will be an ideal response?

Physics & Space Science

Maggie drops a stuffed bear over the side of her crib. It hits the floor with speed v and comes to rest. She then drops a rubber ball with the same mass from the same height, and it bounces back upwards with speed v. Compare the change in momentum of the bear and the ball.

A. ?pbear = ?pball B. ?pbear = 2 ?pball C. ?pbear = ½ ?pball D. ?pbear = - ?pball

Physics & Space Science

Which of the following correctly describes the meridian in your sky?

a) The full circle on any sphere that divides day and night b)the point directly over your head c) a half-circle extending to your horizon due north a half-circle extending to your horizon due north

Physics & Space Science