Physics
Physics, 15.11.2019 06:31, ayeofaygo5168

1) when sound (or any wave) is incident on a barrier where the nature of the medium changes (e. g. air to water) what generally happens?

a. all the energy is reflected
b. the sound is always completely absorbed
c. all the energy is transmitted
d. energy is transmitted and reflected

2) sound waves carry energy expressed as intensity i=(power/area) averaged over time. how does intensity depend on the amplitude of the pressure oscillations, p0?

a. i∝p0
b. i∝1/p0^2
c. i∝p0^2
d. i is independent of p0
e. i∝p0^4

answer
Answers: 1

Other questions on the subject: Physics

image
Physics, 22.06.2019 11:30, emilyplays474
In a good thermo flask the main cause of heat loss is
Answers: 1
image
Physics, 22.06.2019 14:00, batmanmarie2004
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
Answers: 1
image
Physics, 22.06.2019 15:30, cerna
What is an aquifer for science class
Answers: 2
image
Physics, 22.06.2019 21:00, dondre54
Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.
Answers: 1
Do you know the correct answer?
1) when sound (or any wave) is incident on a barrier where the nature of the medium changes (e. g. a...

Questions in other subjects:

Konu
Chemistry, 23.11.2019 01:31