In winter the air just above the top bunk bed is warmer than the air just above the bottom bunk bed, because warm air rises. Which of the following describes the method of heating that causes this difference in temperature

Convection

Explanation:

Convection: the lighter warm air moves up and the heavier cold air moves down.

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