Jules verne wrote a book called twenty thousand leagues under the sea. is the ocean really that deep? explain.

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?