What is the intensity of a sound with a measured intensity level of 85 dB? (I0 = 10?12 W/m2)
a. 1.3E–6 W/m2
b. 3.2E–4 W/m2
c. 8.5E–6 W/m2
d. 2.0E–3 W/m2
e. 8.5E–3 W/m2
b
You might also like to view...
A Type Ia supernova results in the formation of a neutron star.
Answer the following statement true (T) or false (F)
________ is the color of the lowest frequency visible light
Fill in the blank(s) with correct word
A 0.120 pF parallel-plate capacitor is charged to a potential difference of 10.0 V and then disconnected from the battery. A cosmic ray burst creates 1.00 × 10^6 electrons and 1.00 × 10^6 positive charges between the plates. If the charges do not recombine, but reach the oppositely charged plates, by how much is the potential difference between the capacitor plates reduced?
a. 1.33 V b. 7.34 V c. 8.67 V d. 1,330 V e. 8,670 V
What medium changes in temperature and exerts the forces that operate James Watt's engine?
a. steam b. coal c. hot carbon dioxide and water vapor from burning gasoline d. air e. warm water