A) langevin theory of paramagnetism assumes that atoms or molecules with magnetic moment do not interact with each other and are only affected by the applied field and thermal provocations. that would cause curie's law. in 1907, pierre weiss explained that each magnetic moment interacts with each other. he suggested that this interaction could be explained by an imaginary molecular field (hm = ).
by using molecular field expression derive = c/t-θ for magnetic susceptibility.
b) plot the temperature-dependent curves of magnetic susceptibility for curie and curie-weiss paramagnetism and diamagnetism on a single graph.

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.

i think the answer is a, hope this : )

c) power lifting, will be your answer.

,

deku ❤

gravitational energy

electrical energy

kinetic energy

ligh energy