The frequency from an empty Coke bottle can be calculated using the following formula, which is named after the German scientist, Hermann von Helmholtz, who discovered and studied this phenomenon: f = In this equation, the variables are defined below: f=frequency, in hertz s = 343 meters/second (speed of sound in air) D = diameter of circular opening, in m A = area of circular opening, in m². The area of the opening is S A 2πT V x (L+0.8D) equal to (D² V = volume of bottle excluding the neck region, in m³ L= length of neck region, in m The constants 2 and 0.8 can be considered exact (with an infinite number of significant digits). Using the measurements provided below, calculate the Helmholtz resonance frequency, f, in hertz (Hz). Use the Helmholtz resonance equation above. Show all your work. For this problem, you must show which digits are significant in your intermediate calculations using underlines. Round your final answer to the appropriate number of significant figures. For full credit, you must include units beside every number in all your calculations. ● Dimensions of empty Coke bottle: • D (diameter) = 1.7 cm . V (volume) = 1.00 liters. Note that there are exactly 1000 liters in 1 cubic meter (1000 L = 1 m³) L (length of neck) = 23 mm

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
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Author:Saeed Moaveni
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Chapter9: Mass And Mass-related Variables In Engineering
Section: Chapter Questions
Problem 2P
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The frequency from an empty Coke bottle can be calculated using the
following formula, which is named after the German scientist,
Hermann von Helmholtz, who discovered and studied this
phenomenon:
f
In this equation, the variables are defined below:
f = frequency, in hertz
s = 343 meters/second (speed of sound in air)
D
= diameter of circular opening, in m
A = area of circular opening, in m². The area of the opening is
equal to (D²
V
= volume of bottle excluding the neck region, in m³
L = length of neck region, in m
The constants 2 and 0.8 can be considered exact (with an infinite
number of significant digits).
S
2πT
Using the measurements provided below, calculate the Helmholtz
resonance frequency, f, in hertz (Hz). Use the Helmholtz resonance
equation above. Show all your work. For this problem, you must
show which digits are significant in your intermediate calculations
using underlines. Round your final answer to the appropriate number
of significant figures. For full credit, you must include units beside
every number in all your calculations.
●
A
V x (L + 0.8D)
Dimensions of empty Coke bottle:
D (diameter) = 1.7 cm
V (volume) = 1.00 liters. Note that there are exactly 1000
liters in 1 cubic meter (1000 L = 1 m³)
L (length of neck) = 23 mm
●
Hints:
.
Volume
(V)
Coca-Co
Empty Coke bottle.
Consider converting your units to meters, meters², and meters before inserting them into the
Helmholtz equation.
Based on experiments I've performed at home, the Coke bottle hums at a frequency between
100 and 200 Hz. If your answer is not within this range, please check your calculations.
Transcribed Image Text:The frequency from an empty Coke bottle can be calculated using the following formula, which is named after the German scientist, Hermann von Helmholtz, who discovered and studied this phenomenon: f In this equation, the variables are defined below: f = frequency, in hertz s = 343 meters/second (speed of sound in air) D = diameter of circular opening, in m A = area of circular opening, in m². The area of the opening is equal to (D² V = volume of bottle excluding the neck region, in m³ L = length of neck region, in m The constants 2 and 0.8 can be considered exact (with an infinite number of significant digits). S 2πT Using the measurements provided below, calculate the Helmholtz resonance frequency, f, in hertz (Hz). Use the Helmholtz resonance equation above. Show all your work. For this problem, you must show which digits are significant in your intermediate calculations using underlines. Round your final answer to the appropriate number of significant figures. For full credit, you must include units beside every number in all your calculations. ● A V x (L + 0.8D) Dimensions of empty Coke bottle: D (diameter) = 1.7 cm V (volume) = 1.00 liters. Note that there are exactly 1000 liters in 1 cubic meter (1000 L = 1 m³) L (length of neck) = 23 mm ● Hints: . Volume (V) Coca-Co Empty Coke bottle. Consider converting your units to meters, meters², and meters before inserting them into the Helmholtz equation. Based on experiments I've performed at home, the Coke bottle hums at a frequency between 100 and 200 Hz. If your answer is not within this range, please check your calculations.
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