A crying baby emits sound with an intensity of 8.0 × 10-8 W/m2. What is the intensity level for a set of quintuplets? The lowest detectable intensity is 1.0 × 10-12 W/m2
A)
79 dB
B)
69 dB
C)
56 dB
D)
49 dB
E)
36 dB
C
You might also like to view...
In the two-slit experiment, for the condition of bright fringes, the value of m = +2 corresponds to a path difference of ?
Indicate whether the statement is true or false
Rotational Dynamics: The rotating systems shown in the figure differ only in that the two identical movable masses are positioned a distance r from the axis of rotation (left), or a distance r/2 from the axis of rotation (right). If you release the hanging blocks simultaneously from rest,
A. the block at the left lands first. B. the block at the right lands first. C. both blocks land at the same time.
Of the Jovian satellites, which shows the oldest, most cratered surface?
A) Miranda B) Callisto C) Enceladus D) Ganymede E) Triton
Five objects of mass m move at velocity 
at a distance r from an axis of rotation perpendicular to the page through point A, as shown below. The one that has zero angular momentum about that axis is
a.
b.
c.
d.
e.