During the battle of bunker hill, it is commonly thought that the commanders gave the order "don't shoot until you see the whites of their eyes! " to make sure the british troops were close enough that a hit was a certainty. if take your commander's instructions literally and don't fire until the whites of the enemy's eyes are just resolvable by your pupil, how far away (in meters) are they when you open fire? assume your target has an eye which is 2.9 cm across, the diameter of your pupil is 5.3 mm, and you are observing at a wavelength of 555 nm.

true

explanation:

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.