Consider an isolated composite system consisting of subsystems a and b that can exchange energy with each other subsystem a consists of three noninteracting spins, cach having magnetic moment ! subsystem b consists of two noninteracting spins cach with a magnetic moment 2 a uniform magnetic field h is applied to the composite system (a) suppose that the total energy is e = -3uh what are the accessible - crostates of the composite system? (b) what is the probability p(m) that system a has magnetization m? (5) (c) suppose that systems a and b are initially separated from each other and that the net magnetic moment of a is -34 and the net magnetic moment of b is +4u the systems are then placed in thermal contact with one another and are allowed to exchange energy what is the probability p(m) that the net magnetic moment of systemi a has one of its possible values m? (d) for the situation described in (c), what is the mean value of the net magnetic monent of system a?

the higher the current the higher the mag field around it the higher the influence on the compass

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

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