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 a source of heat for magma formation? magma plumes in the continental crust friction due to divergence friction due to subduction magma plumes in the oceanic crust

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?