Acylindrical capacitor is made of two thin-walled concentric cylinders. the inner cylinder has radius 8 mm , and the outer one a radius 12 mm . the common length of the cylinders is 156 m . what is the potential energy stored in this capacitor when a potential difference 7 v is applied between the inner and outer cylinder? (k =1/4∗π∗ϵ0=8.99×109n⋅m2/c2)

the amount of current in the coil

scientific laws are the result of testing theories and proving them to be facts.

anchor = archer //

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.