You are driving down the road at 15 m/s you step on the gas and speed up with uniform acceleration of 2.5 m/s^2 for 0.80 seconds. If your tires have a radius of 34 cm, what is their angular displacement during this period of acceleration?

And we have the following relation between the angular displacement and the linear displacement:

Where x represent the linear displacement and the angular displacement, if we solve for we got:

Explanation:

For this case we have the following data given:

represent the initial speed

represent the acceleration

represent the time

represent the radius

First we can calculate the linear displacement with the following formula from kinematics:

And replacing we have:

And we have the following relation between the angular displacement and the linear displacement:

Where x represent the linear displacement and the angular displacement, if we solve for we got:

And that would be the angular displacement during the period of acceleration.

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

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