The image shows water waves approaching the boundary between an area of slower speed and an area of higher speed. The boundary is marked by a dashed line. The original direction of the wave is shown by the arrow on the left. What will happen to the wavelength and direction of the wave as it crosses the boundary? Wave approaching boundary
A. The wavelength increases and the waves follow arrow 1.
B. The wavelength decreases and the waves follow arrow 1.
C. The wavelength increases and the waves follow arrow 2.
D. The wavelength decreases and the waves follow arrow 2.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.