Sound is more effectively transmitted into a stethoscope by direct contact rather than through the air, and it is further intensified by being concentrated on the smaller area of the eardrum. It is reasonable to assume that sound is transmitted into a stethoscope 100 times as effectively compared with transmission though the air. What, then, is the gain in decibels produced by a stethoscope that has a sound gathering area of 15.0cm2 , and concentrates the sound onto two eardrums with a total area of 0.900cm2 with an efficiency of 40.0% ?
Answers: 2
Another question on Physics
Physics, 22.06.2019 08:40
Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?
Answers: 1
Physics, 22.06.2019 08:40
The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.
Answers: 2
Physics, 22.06.2019 10:00
During which interval are the persons represented by the graph not moving? a) 0 to 0.5 hrs b) 1.5 to 2 hrs c) 2 to 2.5 hrs d) 4.5 to 5 hrs
Answers: 1
You know the right answer?
Sound is more effectively transmitted into a stethoscope by direct contact rather than through the a...
Questions
History, 08.10.2019 14:00
Chemistry, 08.10.2019 14:00
Physics, 08.10.2019 14:00
Mathematics, 08.10.2019 14:00
Mathematics, 08.10.2019 14:00
Mathematics, 08.10.2019 14:00
English, 08.10.2019 14:00
Mathematics, 08.10.2019 14:00
Biology, 08.10.2019 14:00
Mathematics, 08.10.2019 14:00
Physics, 08.10.2019 14:00
English, 08.10.2019 14:00
