Each of the gears a and b has a mass of 2.4 kg and a radius of gyration of 60 mm, while gear c has a mass of 12 kg and a radius of gyration of 150 mm. a couple m of constant magnitude 10 n × m is applied to gear b. determine the number of revolutions of gear c required for its angular velocity to increase from 100 to 450 rpm and the corresponding tangential force acting on gear a. (round the final answer to two decimal places.)

it is the second option.

scientific laws are the result of testing theories and proving them to be facts.

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 believe the answer is a hope it and is correct