H2P-267
Inverse square law
H2 Physics · JC 1 · Easy · Inverse square law
A point source emits sound equally in all directions. The intensity at a distance of 2.0 m is 4.0×10⁻⁵ W m⁻². What is the intensity at 6.0 m from the source?
- 4.4×10⁻⁶ W m⁻²
- 1.3×10⁻⁵ W m⁻²
- 7.4×10⁻⁵ W m⁻²
- 1.8×10⁻⁶ W m⁻²
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