Two cello strings, with the same tension and length, are played simultaneously. their fundamental frequencies produce audible beats with a frequency of 8 hz. the string with the lower pitch (frequency) is tuned to an “a” (a frequency of 220 hz). what is the approximate ratio of the linear mass density μ of the string with the higher pitch to that of the string with the lower pitch?

Explanation:

Let f₁ is the fundamental frequency,

Lower pitch frequency,

Fundamental frequency is, .....(1)

Lower frequency is, ..............(2)

Dividing equation (1) and (2) as :

So, the ratio of  linear mass density μ of the string with the higher pitch to that of the string with the lower pitch is 0.00132. Hence, this is the required solution.

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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

the rearrangement of particles in a physical change. hope this