Watch the video of Henrietta slowly pushing the chair under the table. Which statement describes the change in motion if the mass of the chair were changed? (2 points) A:If the mass of the chair decreased, the force needed would decrease. B: If the mass of the chair increased, the force needed would decrease. C: If the mass of the chair decreased, an increased force would not move it. D: To keep the same motion, the force needed would stay the same when the mass of the chair is changed. Pl helppp

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

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

i'm on my way to history not a mistory.