An energy-efficient electric fan converts a large portion of the electrical energy that enters it into .

A. Sound energy in the fan's motor
B. Kinetic energy of the fan blades
C. Thermal energy in the fan's motor
D. An unwanted form of energy

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.