2. a system consists of n non-interacting, localised objects, each of which can exist in one of three quantum states with energies 0, ε , ε (ie., the two upper energy levels are doubly degenerate). derive expressions for the following quantities in terms of ε and t with simplified high and low temperature limits. (a) the single particle partition function (b) the number of particles with energy ε (c) the total energy of the system (d) the helmholtz free energy of the system (e) the entropy of the system (at high temperatures only)

it is because acrylic blanket have acrylic textile fiber

explanation:

its is better than wool blanket

it becomes positively charged by charging it

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide