One end of a horizontal string is fixed to a wall. A transverse wave pulse in the form of a crest is generated at the other end and moves toward the wall, as shown. Consider the pulse after it has been reflected by the wall. v What is/are correct concerning the reflected pulse? A) The reflected pulse forms a crest. B) The reflected pulse forms a valley. C) The reflected pulse has a greater amplitude than that of the incident pulse. D) The reflected pulse has a greater speed than that of the incident pulse. 1. A and B only 2. A and D only 3. A, B and D only 4. A only 5. B and C only 6. B and D only 7. D only

lexy is right because she has the labeled s

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

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explanation:

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