Whisper
Intensity Decibels
1 x 10-10 W/m2 20 db
Normal Conversation 1 x 10-6 W/m2 60 db
Vacuum Cleaner 1 x 104 W/m2 80 db
Front Row of Rock Concert 1 x 10 -1 W/m2 110 db
Jet Taking Off 1 x 10 2 W/m2 140 db
Based on the data, which statement BEST describes sound?
A)
The greater the intensity, the louder the sound.
There is no relationship between loudness and intensity.
The higher the decibel rating, the less intense the sound.
There is an inverse relationship between loudness and intensity.

Which of the following is not a characteristic of s waves? a. travel slower than p waves. b. cannot be detected in locations more than 105° from an earthquake’s epicenter. c. travel through solids and liquids. d. only affect coastal regions.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

What is the magnitude of the gravitational force acting on the earth due to the sun?