subject
Engineering, 19.07.2019 02:30 sar70

What is the equivalent sound pressure level for the following noise levels and durations a)- 93 db for 2.1 hours, b)-85 db for 2.5 hours, c)-95 db for 1.7 hours.

ansver
Answers: 2

Another question on Engineering

question
Engineering, 03.07.2019 15:10
Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?
Answers: 3
question
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
question
Engineering, 04.07.2019 18:20
Determine the damped natural frequencies and the steady state response of a decoupled damped forced two degrees of freedom system. 10ä1 + 2q1 20q1 10 cos t; 10q2 +4q2 + 40q2 10 cos t
Answers: 3
question
Engineering, 04.07.2019 18:20
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
Answers: 3
You know the right answer?
What is the equivalent sound pressure level for the following noise levels and durations a)- 93 db f...
Questions
question
Mathematics, 12.12.2020 16:20
question
Mathematics, 12.12.2020 16:20
question
Mathematics, 12.12.2020 16:20
question
English, 12.12.2020 16:20
question
English, 12.12.2020 16:20
question
Mathematics, 12.12.2020 16:20
question
Mathematics, 12.12.2020 16:20
question
Biology, 12.12.2020 16:20