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Introductory Physics Homework Help
X-ray Tube Output: 80μGy/mAs at 1m, 900µGy/s @1m
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[QUOTE="BobP, post: 5458304, member: 500221"] If I have 900 uGy/sec when I have 80 uGy/mAs and the machine is on for 150ms in total over a 1 second period Then I have 80 * mA per second = 900 Therfore mA = 11.25 mA BUT as the current is not always on the actual mA is mA * 15 * 10 * 10[SUP]-3[/SUP] = 11.25 SO Answer = 75 mA But for part (ii) If output is 900 uGy/sec and I run the machine for 10 seconds then I have a dose of 9000 uGy With an area of 400 cm2 I have a DAP of 9000 uGy * 400 = 3.6 Gy cm^2 = 360 cGycm^2 So I got the mA wrong initially but the DAP correct. Is my answer now correct? Thanks [/QUOTE]
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Introductory Physics Homework Help
X-ray Tube Output: 80μGy/mAs at 1m, 900µGy/s @1m
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