Food producers can irradiate food by passing it close to a radioactive source. How can food producers increase the level of radiation that the food is exposed to?
Tick two boxes.

A) Boil the food before passing it close to the radioactive
source

B) Decrease the distance between the food and the
radioactive source

C)Increase the time for which the food is close to the
radioactive source

D)Put the radioactive source in a box

E) Reduce the temperature of the radioactive source

i think it's 35 meters

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.