5. Practice: Each mass is pulling the rope in the opposite direction with a force equal to its weight. Therefore, the net force is equal to the weight difference between mass A and mass B. For each combination of masses, calculate the total mass, net force, and acceleration. Next, measure the final velocity, time, and acceleration for each combination using the Gizmo. Include all units. Mass A Mass B Total mass Net force Calculated Final acceleration velocity Time Measured acceleration 1.0 kg 2.5 kg 4.0 kg 1.0 kg 3.0 kg 3.5 kg 5.0 kg 5.0 kg
6. Analyze: How well did your calculated values for acceleration match up with the measured values ? What are the possible sources of error?

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