An uncharged nonconductive hollow sphere of radius 18.0 cm surrounds a 12.0 µc charge located at the origin of a cartesian coordinate system. a drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. calculate the electric flux through the hole.

10.36 N.m^2/C

Explanation: In order to calculate the electric flux through the hole drilled in the non conductive sphere which sorrounds a charge: Firstly we have to calculate the electric field at the radius of the sphere

To do that we have to use the Gaussian Law as:

∫E.dS= Total charge inside/ε0

E. Area= Qinside/ε0

E=Q/(4πR^2ε0)=3.3 10^6 N/C

After that we calculate the flux through the hole of 1 mm radius as follows:

E. Ahole= 3.3 10^6*π* (0,18)^2 =10.36 Nm^2/C

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

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.