WILL MARK BRAINLIEST A. Is energy exchanged between your system (the device) and its surroundings? B. Is matter exchanged between your system (the device) and its surroundings? C. Is it an open, closed or isolated system? Explain. 2. What is the law of conservation of energy? 3. Describe two examples of how the law of conservation of energy is demonstrated in the device you created. 4. In the lesson a thermos is presented as an example of an isolated energy system. How could you change the thermos into an open energy system?

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