A wave is propagating from left to right in a medium. The particles in the medium are also vibrating from left to right. What kind of wave does this describe? longitudinal wave

transverse wave

mechanical wave

electromagnetic wave

the answer is b ) square root of 5

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.