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QUESTION 4 Consider the anode cooling curve shown below. Suppose a series of x-ray examinations is planned. If 240,000 Heat Units are absorbed by the anode, how long will it be before another 120,000 Heat Units can be added to the anode? Give your answer to the nearest minute. Anode cooling chart (II) Maximum Heat Storage Capacity of Anode Heat units stored (x 1000) 240 220 200 180 160 140 120 100 80 60 40 20 1000 HU/sec 500 HU/sec 350 HU/sec 250 HU/sec Input curve Cooling curve 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Elapsed time (min)

          QUESTION 4 Consider the anode cooling curve shown below. Suppose a series of x-ray examinations is planned. If 240,000 Heat Units are absorbed by the anode, how long will it be before another 120,000 Heat Units can be added to the anode? Give your answer to the nearest minute. Anode cooling chart (II) Maximum Heat Storage Capacity of Anode Heat units stored (x 1000) 240 220 200 180 160 140 120 100 80 60 40 20 1000 HU/sec 500 HU/sec 350 HU/sec 250 HU/sec Input curve Cooling curve 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Elapsed time (min)

QUESTION 4 Consider the anode cooling curve shown below. Suppose a series of x-ray examinations is planned. If 240,000 Heat Units are absorbed by the anode, how long will it be before another 120,000 Heat Units can be added to the anode? Give your answer to the nearest minute. Anode cooling chart (II) Maximum Heat Storage Capacity of Anode Heat units stored (x 1000) 240 220 200 180 160 140 120 100 80 60 40 20 1000 HU/sec 500 HU/sec 350 HU/sec 250 HU/sec Input curve Cooling curve 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Elapsed time (min)

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