A table tennis ball has a mass of about 0.00245 kg. Suppose the ball is hit across the table with a velocity of
4.0 m/s. What is the ball's kinetic energy?

Distinguish between a transverse wave and a longitudinal wave.

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.