Homework Answers
Option A is correct.
Half Value Layer(HVL) reduces the radiation by half of its original value. Since we are adding additional filter of same thickness as the HVL, the exposure would be reduced further half of first HVL,i.e 10/2 = 5 mR/mAs.
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QUESTION 100 An imaging system has a HVL of 3 mm Al. If an exposure is...
QUESTION 45 An exam is made at SID of 100 cm, 100 kVp and 16 mAs....
QUESTION 45 An exam is made at SID of 100 cm, 100 kVp and 16 mAs. The resulting X-ray intensity is 10 mR. If the exam is repeated at at SID = 50 cm, what should be the new mAs to keep the x-ray intensity at 10 mR? a. O 16 mAs b. O 64 mAs c. O 8 mAs d. O 4 mAs
QUESTION 79 A radiographic exam calls for 85 kVp, 10 mAs and 100 cm SID. It...
QUESTION 79 A radiographic exam calls for 85 kVp, 10 mAs and 100 cm SID. It results in an x-ray intensity of 10 mR. To what level can the kVp be adjusted to obtain an x-ray intensity of 12 mR? a. O 85 kVp b. O 78 kVp c. O 93 kVp d. O 100 kVp e. O 98 kVp
Please answer questions 3-5 3) A solution has 10 mM of glucose and 25 mM of...
Please answer questions 3-5
3) A solution has 10 mM of glucose and 25 mM of albumin protein. What is the osmolarity lennso ensidmem of eub stom 1sloc bne.enol begisro 0 ortt wobevon 2eluoolom esen eosevsel 10 Y oe berotnoonoo 2es ot o noituloe belsntnson00 nistog to eeqy 016 tod) enlelo10 1elmeo o lennsrdo ens nelog 26 noiautib bateillost bollso al aeso1 ein 4) A solution contains 50 mM NaCl, 20 mM alucose, and 10 mM albumin. What is the...
Question 1 (Total 100/3 Marks) Figure 1 (all units are mm) shows a simply supported beam of span ...
Question 1 (Total 100/3 Marks) Figure 1 (all units are mm) shows a simply supported beam of span 2500 mm with a 5 kN/m load. The cross-section of the beam is a composite section made from two steel plates attached to the top and bottom of a timber section. The top steel plate is 5 mm wide and 20 mm deep. The bottom steel plate is also 5 mm wide but 10 mm deep. The timber section is 50 mm...
Question 3 20 pts A system has three components with reliability values A, B, and C....
Question 3 20 pts A system has three components with reliability values A, B, and C. The reliability of the system. R. can be calculated using the equation 1.R - A+B+C 2.R-AxBxC 3. Insufficient Information has been provided. 4. R = 1 - (1 - A)(1-B1-C)] 04 O 2 U Question 4 20 pts A system is made up of four independent components in series each having a failure rate of .005 failures per hour. If time to failure is...
Question 1 The stepped flat bar has a constant thickness of 8.0 mm. It carries three concentrated loads as shown...
Question 1 The stepped flat bar has a constant thickness of 8.0 mm. It carries three concentrated loads as shown. Let P 200 N, L 180 mm, L, = 80 mm, and Ls 40 mm. Compute the maximum stress due to bending and state where it occurs. Note: The bar is braced against lateral bending and twisting. 100 mm 140 mm 1CX) mm 140 mm 2P Flat plate r3 mm t8 mm typical 12 m 24 mm-36 mm 48 mm...
Question 1: Your bear cooler is made of 20-mm-thick polystyrene (k = 0.021 W/m.K) and has...
Question 1: Your bear cooler is made of 20-mm-thick polystyrene (k = 0.021 W/m.K) and has interior dimensions of 0.5 mx0.3 m X 0.3 m. If you fill the inside with an ice-water mixture (so the temperature is maintained at 4°C) and leave the cooler on the porch on hot summer day (ambient temperature of 30°C ), what is the heat flux through the container wall? Assume negligible heat gain through the base of the cooler. You may have to...
Question 1 A 10 mm thick disk of stainless steel is rotating about point O as shown in Figure 1. ...
Question 1 A 10 mm thick disk of stainless steel is rotating about point O as shown in Figure 1. A load of 5 N has been applied to point P. Include gravity in your calculations. Use the methods of static analysis, dynamic analysis and virtual work to calculate the torque required to maintain a constant counter-clockwise rotation of 500 rpm. Make sure you draw a free body diagram. You may use SolidWorks to calculate the mass and mass moment...
Part 7 of 8 - Question 7 of 8 1.0 Points , find det A. [100...
Part 7 of 8 - Question 7 of 8 1.0 Points , find det A. [100 If A = 0 1 2 O 34 ОАО OB. 2 O C. -2 O D. 10 O E. not defined Reset Selection Part 8 of 8 - Question 8 of 8 1.0 Points 2] [100] 5 and C= 0 0 2 . Which of these matrices have determinant zero? 0 30 [171] -1 0 Consider the matrices A= 3 0 3 , B=...
Question 3 (35 marks) Consider a mechanical system shown in Figure 3. The system is at rest for t
Question 3 (35 marks) Consider a mechanical system shown in Figure 3. The system is at rest for t<0. The input force f is applied at 0. The displacement x is the output of the system and is measured from the equilibrium position. kI b2 bi it Figure 3. Schematic of a mechanical system. (a) Obtain the traf) (10 marks) X (s) F(s) (b) Use of force-voltage analogy, obtain the equations for an electrical system (5 marks) (c) Draw a...
QUESTION 45 An exam is made at SID of 100 cm, 100 kVp and 16 mAs. The resulting X-ray intensity is 10 mR. If the exam is repeated at at SID = 50 cm, what should be the new mAs to keep the x-ray intensity at 10 mR? a. O 16 mAs b. O 64 mAs c. O 8 mAs d. O 4 mAs
QUESTION 79 A radiographic exam calls for 85 kVp, 10 mAs and 100 cm SID. It results in an x-ray intensity of 10 mR. To what level can the kVp be adjusted to obtain an x-ray intensity of 12 mR? a. O 85 kVp b. O 78 kVp c. O 93 kVp d. O 100 kVp e. O 98 kVp
Please answer questions 3-5
3) A solution has 10 mM of glucose and 25 mM of albumin protein. What is the osmolarity lennso ensidmem of eub stom 1sloc bne.enol begisro 0 ortt wobevon 2eluoolom esen eosevsel 10 Y oe berotnoonoo 2es ot o noituloe belsntnson00 nistog to eeqy 016 tod) enlelo10 1elmeo o lennsrdo ens nelog 26 noiautib bateillost bollso al aeso1 ein 4) A solution contains 50 mM NaCl, 20 mM alucose, and 10 mM albumin. What is the...
Question 1 (Total 100/3 Marks) Figure 1 (all units are mm) shows a simply supported beam of span 2500 mm with a 5 kN/m load. The cross-section of the beam is a composite section made from two steel plates attached to the top and bottom of a timber section. The top steel plate is 5 mm wide and 20 mm deep. The bottom steel plate is also 5 mm wide but 10 mm deep. The timber section is 50 mm...
Question 3 20 pts A system has three components with reliability values A, B, and C. The reliability of the system. R. can be calculated using the equation 1.R - A+B+C 2.R-AxBxC 3. Insufficient Information has been provided. 4. R = 1 - (1 - A)(1-B1-C)] 04 O 2 U Question 4 20 pts A system is made up of four independent components in series each having a failure rate of .005 failures per hour. If time to failure is...
Question 1 The stepped flat bar has a constant thickness of 8.0 mm. It carries three concentrated loads as shown. Let P 200 N, L 180 mm, L, = 80 mm, and Ls 40 mm. Compute the maximum stress due to bending and state where it occurs. Note: The bar is braced against lateral bending and twisting. 100 mm 140 mm 1CX) mm 140 mm 2P Flat plate r3 mm t8 mm typical 12 m 24 mm-36 mm 48 mm...
Question 1: Your bear cooler is made of 20-mm-thick polystyrene (k = 0.021 W/m.K) and has interior dimensions of 0.5 mx0.3 m X 0.3 m. If you fill the inside with an ice-water mixture (so the temperature is maintained at 4°C) and leave the cooler on the porch on hot summer day (ambient temperature of 30°C ), what is the heat flux through the container wall? Assume negligible heat gain through the base of the cooler. You may have to...
Question 1 A 10 mm thick disk of stainless steel is rotating about point O as shown in Figure 1. A load of 5 N has been applied to point P. Include gravity in your calculations. Use the methods of static analysis, dynamic analysis and virtual work to calculate the torque required to maintain a constant counter-clockwise rotation of 500 rpm. Make sure you draw a free body diagram. You may use SolidWorks to calculate the mass and mass moment...
Part 7 of 8 - Question 7 of 8 1.0 Points , find det A. [100 If A = 0 1 2 O 34 ОАО OB. 2 O C. -2 O D. 10 O E. not defined Reset Selection Part 8 of 8 - Question 8 of 8 1.0 Points 2] [100] 5 and C= 0 0 2 . Which of these matrices have determinant zero? 0 30 [171] -1 0 Consider the matrices A= 3 0 3 , B=...
Question 3 (35 marks) Consider a mechanical system shown in Figure 3. The system is at rest for t<0. The input force f is applied at 0. The displacement x is the output of the system and is measured from the equilibrium position. kI b2 bi it Figure 3. Schematic of a mechanical system. (a) Obtain the traf) (10 marks) X (s) F(s) (b) Use of force-voltage analogy, obtain the equations for an electrical system (5 marks) (c) Draw a...
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