A cylindrical can has height h and radius r both measured in cm. If the rate of increase of volume of the can with respect to height equals the rate of increase of volume with respect to radius, what is the relationship between height and radius

It simply means that the radius is directly proportional to the height.

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

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete