Which is not an advantage of a radiant heating? it can replace central heating systems. it can direct warm air where it is needed. it can easily be turned off.

Radiant heating can direct warm air where it is needed and it is not an advantage.

Option B

Explanation:

Radiant heating is the process in which the heat is supplied directly to the floor and to the object. It uses infrared radiation which is a form of electromagnetic waves.

They are capable of heating the floor uniformly. Without any need for corrections and they are easy to install also. Their disadvantage is that they are capable of sucking warm air.

im sorry i dont know

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.