Intensity, Intenstiy level problems & CH 1 Begin Date: 8/17/2016 12:00:00 AM e D

Question

Intensity, Intenstiy level problems & CH 1 Begin Date: 8/17/2016 12:00:00 AM e Date: 4/28/201 Date: 12/30/2017 11:59:00 PM Problem 3: waves of intensity 1.2sx 102 wirn? are produced by the rectangular head of a medical imaging device measuring 3.2 cm by 5.5 cm. What is the power output of this device, in watts? Grade sino cos0 tan0 4 S 6 1 2 3 atan0 acotano sinho Degrees Radians Feedback: 0% deduction per feedback. d Hints: deduction per hint. Hints remaining: 1 All coatert 2017 Expert TALLC

Explanation / Answer

Intensity = 1.25*10^2 W/m^2
Area = length*width
Area = 3.2*10^-2*5.5*10^-2 = 0.00176 m^2
Power output = intensity times Area
P = 1.25*10^2*0.00176
P = 0.220 W.

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