Two piano strings are supposed to be vibrating at 220 Hz , but a piano tuner hears three beats every 3.2 s when they are played together. f one is vibrating at 220 Hz , what must be the frequency of the other (is there only one answer)

Explanation:

The frequency beat is give n by the expression:

fb = | f1 -f2 |      ( 1 )

that is, the absolute value of the difference between the frequencies of the waves. But also the fb is the radio between beats and time:

fb = beats/time = 3/3.2 = 0.93 Hz

By replacing in the formula ( 1 ) :

f2 = 220 Hz + 0.93 Hz = 220.93 Hz

f2 = 220 Hz - 0.93 Hz = 219.07 Hz

But we take the value 220.93 Hz ≈ 221 HZ because a piano can support this frequency.

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.