A crying baby emits sound with an intensity of 8.0 × 10-8 W/m2
Calculate a reasonable estimate for the intensity level from a set of quintuplets (five babies), all crying simultaneously at the same place? 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
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Two current loops are coaxial and coplanar. One has radius a and the other has radius 2a. Current 2I in the outer loop is parallel to current I in the inner loop. The magnitude of the magnetic field at the center of the two loops is
A.
B.
.C.
.D.
.E.
.The slope of a distance vs. time graph is the __________
Fill in the blank(s) with correct word
There are more neutrons than protons in most nuclei because neutrons are physically smaller than protons
What will be an ideal response?
When the frequency of the source of a water wave increases, the distance between successive peaks in the wave increases
Indicate whether the statement is true or false