Test-2023-10-09 (Results)

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1	N.	Timestamp	Email address	Surname and Name	Matricula	A	B	C	D	E	F	Online	Paper	1) Check the sentences you think are TRUE	-1	1	-1	-1	1	1	-1	2) When the sound pressure is doubled, what happens?	-1	-1	1	-1	1	3) What's the minimum SPL which can be heard at 100 Hz according to ISO 226-2003?	Score	4) What's the sound pressure corresponding to an SPL of 100+E dB ?	OK Value	OK unit	Score	5) Compute the SPL corresponding to a sound pressure of 3+F Pa	OK Value	OK unit	Score	6) Compute the (incoherent) sum of the sound pressure level of 80+E dB and 78+D dB	OK Value	OK unit	Score	7) The SPL of a fan is 78+F dB at 63 Hz. Convert the SPL in dB(A)	OK Value	OK unit	Score	8) An average sound intensity level of 60+E dB(A) is measured on a surface surrounding the source having an area of 10+F m2. Compute the power level of the sound source	OK Value	OK unit	Score	9) A plane progressive wave is propagating in air, with a SPL=80+E dB. Compute the values of sound pressure, particle velocity, sound intensity, sound energy density.	p (Pa)	v (m/s)	I (W/m²)	D (J/m³)	Score	TOTAL

2	1	10/9/2023 15:00:00		Asiyil Taw Feca Almansouri	355458	3	5	5	4	5	8	0	1		0	0	0	0	0	0	0		0	0	0	0	0	20 dB	-1		3.56	Pa	0		114.8	dB	0		86.8	dB	0		59.8	dB(A)	0		77.6	dB(A)	0		0.356	8.89E-04	3.16E-04	9.487E-07	0	-1
3	2	10/9/2023 15:53:34	milann1134@gmail.com	Milosta Hanna	2 3 5 7 1 4	2	3	5	7	1	4	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	0	1	1	0	The value of the sound power level increases by 6 dB	0	0	1	0	0	40 dB	-1	2.2 Pa	2.24	Pa	1	110.8 dB	110.9	dB	1	86.45 dB	86.5	dB	1	55.8 dB(A)	55.8	dB(A)	1	854 dB	72.5	dB(A)	0	p = 0.22 Pa ; I = 80 dB ; v = 3,6 m/s	0.224	5.61E-04	1.26E-04	3.777E-07	1	9
4	3	10/9/2023 15:54:39	violettegobert79@gmail.com	Gobert Violette	365846	3	6	5	8	4	6	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	0	1	1	0	The value of the sound power level increases by 3 dB, The sound pressure level increases by 6 dB	0	-1	0	0	1	40 dB	-1	3.17 Pa	3.17	Pa	1	113.1 dB	113.1	dB	1	88.1 dB	88.1	dB	1	57.8 dB(A)	57.8	dB(A)	1	76 dB(A)	76.0	dB(A)	1	p = 0.32 Pa ; v = 0.00079 m/s ; I = 0.00025 W/m^2 ; D = 0.00000075 J/m^3	0.317	7.92E-04	2.51E-04	7.536E-07	4	12
5	4	10/9/2023 15:56:18	dpanizzolo46@gmail.com	Panizzolo Davide	347619	3	4	7	6	1	9	1	1	The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density, The sound speed depends on the sound level and frequency	0	0	0	0	1	1	-1	The value of the sound power level increases by 3 dB, The sound pressure level increases by 3 dB	0	-1	0	-1	0	25 dB	1	101 dB	2.24	Pa	0	10 dB	115.6	dB	0	86 dB	85.8	dB	1	87 dB	60.8	dB(A)	0		73.8	dB(A)	0		0.224	5.61E-04	1.26E-04	3.777E-07	0	2
6	5	10/9/2023 15:56:19	legrouxthibaut@gmail.com	Thibaut Legroux	363610	3	6	3	6	1	0	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	0	1	1	0	The value of the sound power level increases by 3 dB, The sound pressure level increases by 6 dB	0	-1	0	0	1	40 dB	-1	P = 2.24 Pa	2.24	Pa	1	SPL = 103.5 dB	103.5	dB	1	SPL = 85.76 dB	85.8	dB	1	SPL = 51.8 dB(A)	51.8	dB(A)	1	Li= 71 dB(A)	71.0	dB(A)	1	P = 0,22 Pa ; I = 0,000127 w/m^2 ; v = 0.000561 m/s ; D= 0.000000378 J/m^3	0.224	5.61E-04	1.26E-04	3.777E-07	4	12
7	6	10/9/2023 15:56:36	federico.pepe@studenti.unipr.it	Pepe Federico	348190	3	4	8	1	9	0	1	1	The sound speed in solids depends on their elastic modulus and density, The sound speed depends on the sound level and frequency	0	0	0	0	0	1	-1	The value of the sound power level increases by 3 dB	0	-1	0	0	0	40 dB	-1	80,29 Pa	5.64	Pa	0	37,68 db	103.5	dB	0	89,41 db	89.4	dB	1	51,8 db	51.8	dB(A)	1	8,39 w	79.0	dB(A)	0	P=38 Pa	0.564	1.41E-03	7.94E-04	2.383E-06	0	1
8	7	10/9/2023 15:57:23	mirko.monaco@studenti.unipr.it	Monaco Mirko	356942	3	5	6	9	4	2	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	0	1	1	0	The value of the sound power level increases by 6 dB, The sound pressure level increases by 3 dB	0	0	1	-1	0	40 dB	-1	3.17 Pa	3.17	Pa	1	108 dB	108.0	dB	1	88.8 dB	88.8	dB	1	53.8 dB(A)	53.8	dB(A)	1	74.8 dB(A)	74.8	dB(A)	0	p = 0.317 Pa; v = 7.92410^(-4) m/s; I = 2.51210^(-4) W/m2; D = 7.536*10^(-7) J/m3	0.317	7.92E-04	2.51E-04	7.536E-07	4	11
9	8	10/9/2023 15:59:12	mahdi.habibi@studenti.unipr.it	habibi mahdi	3 6 6 0 4 3	3	6	6	0	4	3	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	-1	0	1	0	The value of the sound power (in W) doubles, The value of the sound power level increases by 6 dB, The sound pressure level increases by 3 dB	-1	0	1	-1	0	0 dB	-1	10.4 pa	3.17	Pa	0	60 dB	109.5	dB	0	128 dB	85.0	dB	0	54.8 dB(A)	54.8	dB(A)	1	82.3 dB(w)	75.1	dB(A)	0	p=0.316 pa v=0.00075mm/s I=2.3710^-4 w/m2 D=81.210^-6 J/m3	0.317	7.92E-04	2.51E-04	7.536E-07	3	4
10	9	10/9/2023 15:59:13	abdullah291298@gmail.com	Abdullah Md	29/12/98	2	9	1	2	9	8	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	-1	0	1	0	The sound pressure level increases by 6 dB	0	0	0	0	1	0 dB	-1	117 uPa(Approx)	5.64	Pa	0	113 dB	114.8	dB	0	77 dB(Approx)	89.5	dB	0	110 dB (App)	59.8	dB(A)	0		81.6	dB(A)	0	P=0.000031Pa; v=2.25×10-6 m/s; I=2.05×10^-6 w/m2 D= 1×10-7 j/m2	0.564	1.41E-03	7.94E-04	2.383E-06	0	2
11	10	10/9/2023 15:59:23	francesco.mortali@studenti.unipr.it	Mortali Francesco	343833	3	4	3	8	3	3	1	1	The sound intensity level is always smaller or equal than the sound energy density level, The sound speed in air is proportional to the temperature, The sound speed in solids depends on their elastic modulus and density	0	1	0	-1	0	1	0	The value of the sound power level increases by 3 dB, The sound pressure level increases by 3 dB	0	-1	0	-1	0	40 dB	-1	2.82 Pa	2.83	Pa	1	109.5 dB	109.5	dB	1	87.8 dB	87.8	dB	1	54.8 dB(A)	54.8	dB(A)	1	11.14 dB	74.1	dB(A)	0	p = 0.28 Pa ; v = 7.06 * 10^-4 m/s ; I = 1.99 * 10^-4 W/m^2 ; D = 5.98 * 10^-7 J/m^3	0.283	7.06E-04	2.00E-04	5.986E-07	4	7
12	11	10/9/2023 16:00:34	prince.mathew@studenti.unipr.it	Mathew Prince	365868	3	6	5	8	6	8	1	1	The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density	0	0	0	0	1	1	0	The value of the sound power level increases by 6 dB, The sound pressure level increases by 3 dB	0	0	1	-1	0	0 dB	-1	3.99 Pa	3.99	Pa	1	114.8 dB	114.8	dB	1	89 dB	89.0	dB	1	59.8 dB(A)	59.8	dB(A)	1	78.55 dB	78.6	dB(A)	1	p = 0.399 Pa ; v = 0.000949 m/s ; I =0.00037 W/m2 ; D = 1.1*10^-6 J/m3	0.399	9.98E-04	3.98E-04	1.194E-06	4	11
13	12	10/9/2023 16:03:22	andrea.ronga@studenti.unipr.it	Ronga Andrea	307205	3	0	7	2	0	5	1	1	The sound speed in air is proportional to the temperature, The sound speed in solids depends on their elastic modulus and density	0	0	0	-1	0	1	0	The value of the sound power level increases by 3 dB, The sound pressure level increases by 6 dB	0	-1	0	0	1	25 dB	1	0.2 Pa	2.00	Pa	0	132 dB	112.0	dB	0	83 dB	83.0	dB	1	57 dB	56.8	dB(A)	1	4 dB/m^2	71.8	dB(A)	0	p = 0.02 Pa ; v = 510^-4 m/s ; I = 110^-4 W/m^2 ; D = 3*10^-7 J/m^3	0.200	5.00E-04	1.00E-04	3.000E-07	3	7
14	13	10/9/2023 16:03:37	vinaysankar@outlook.com	vinay sankar	365368	3	6	5	3	6	8	1	1	The sound speed in air is proportional to the square root of temperature, The sound speed in solids depends on their elastic modulus and density	0	0	0	0	1	1	0	The value of the sound power (in W) doubles, The value of the sound power level increases by 6 dB, The sound pressure level increases by 3 dB	-1	0	1	-1	0	0 dB	-1	3.99Pa	3.99	Pa	1	112.04dB	114.8	dB	0	89dB	87.2	dB	0	59.8dB(A)	59.8	dB(A)	1	77.76dB	78.6	dB(A)	0	P=.399Pa, V=3.7810^-4 m/s, I=3.7810^-4J/m*3, D=.129W/m^2	0.399	9.98E-04	3.98E-04	1.194E-06	2	5
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