Estimate the thickness of Copper, Tin and Lead absorber needed to attenuate a 100 keV photon...
Estimate the thickness of Copper, Tin and Lead absorber needed to attenuate a 100 keV photon beam by a factor of 10^6.Which absorber material would be ideal for building a wall to shield you from the photons?.
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Estimate the thickness of Copper, Tin and Lead absorber needed
to attenuate a 100 keV photon...
Photon Interactions 137Cs is a common gamma-ray source with photon energy of 662 keV. [3 Marks]...
Photon Interactions 137Cs is a common gamma-ray source with photon energy of 662 keV. [3 Marks] Calculate the energy of Compton scattered photon at an angle of 120o. [3 Marks] Calculate the energy difference between the photo-peak and the Compton edge in the response of a scintillator detector in 137Cs spectroscopy. [4 Marks] What thickness of a lead target is needed to reduce the radiation intensity of 100 keV photons down to 10% of its original intensity? The mass attenuation...
Question 2 14 pts You have 100 m of fine copper wire with a radius of...
Question 2 14 pts You have 100 m of fine copper wire with a radius of 0.5 mm. Having only a 12 V power supply that can be treated as ideal, a pencil, and a bag of long nails made from 99.8% pure iron (relative magnetic permeability of 200) you need to make a magnet that would produce a strong magnetic field. A. (2 points) What is the resistance of the 100 m of the given copper wire? Assume the...
Question 4 (25 marks) (a) Consider the hypothetical eutectic phase diagram for metal for lead-tin system....
Question 4 (25 marks) (a) Consider the hypothetical eutectic phase diagram for metal for lead-tin system. Assume that (1) A and B phase cutectic phase diagram for metals A and B, which is similar to that 1. Assume that (1) a and B phases exist at the A and B extremities of the phase diagram, respectively; (2) the eutectic composi m, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B; and (3) the composition of the a phase...
In this problem, you will estimate the heat lost by a typical house, assuming that the...
In this problem, you will estimate the heat lost by a typical house, assuming that the temperature inside is Tin=20∘C and the temperature outside is Tout=0∘C. The walls and uppermost ceiling of a typical house are supported by 2×6 inch wooden beams (kwood=0.12W/(mK)) with fiberglass insulation (kins=0.04W/(mK)) in between. The thickness of the wall is Lwall=18cm allowing for interior and exterior covering. Assume that the house is a cube of length L=9.0m on a side. Approximate that the roof has...
Ection A uestion 1 Hook's Law, state which variables are involtved it its calculation and explain...
ection A uestion 1 Hook's Law, state which variables are involtved it its calculation and explain, equations or text, how to determine it (2 marks) A1. The with a square cross-section 1 cm. Determine the direct stress test specimen is being subjected to a tensile load of 3.0 kN, as shown in figure specimen is composed of Titanium, the cylinder is being subjected to. Show your resulit in MNIm s cm Figure A1 Tensile test specimen (3 marks) c) How...
Sorry for posting more than one question -- someone said they needed the rest of the...
Sorry for posting more than one question -- someone said they
needed the rest of the questions to better understand how to answer
one!
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44M0 = 44 x 102 and 60pF = 60 x 10-12 F, respectively, for a membrane segment...
Be used if its thickness were to be limited to 5 mm. iation material that should d is Problem 2.3...
how to solve it? number 2.36
t
be used if its thickness were to be limited to 5 mm. iation material that should d is Problem 2.35 2.36 The development of contact lenses has transformed the solutions that are available today for vision im- pairments. However, wearing them also poses several problems that includes the condition of dry eyes due to lack of cooling, oxygenation, and moisturizing or lubrication of the cornea, among others In the devel- opmental phase of...
use following to solve 3) Using an order of magnitude method (Hill), estimate the TCI in...
use following to solve
3) Using an order of magnitude method (Hill), estimate the TCI in year 2006 dollars for a grass-roots plant with 100,000-lb annual production using an order-of-magnitude method based on a 10,000-lb annual production. The plant contains three 1200-ft/min centrifugal fans, five 1500-ft/min centrifugal blowers, seven 100-ft' centrifugal separators, and two 100-ft shell-and-tube heat exchangers. You may assume all materials are carbon steel, the materials handled are primarily solid, and that this plant construction is done fully...
8. [-14 Points] DETAILS SERPSE10 30.1.OP.008.CTX. MY NOTES ASK YOUR TEACHER You are a technician at...
8. [-14 Points] DETAILS SERPSE10 30.1.OP.008.CTX. MY NOTES ASK YOUR TEACHER You are a technician at an MRI center. One day some medical students enter your lab for a training session. One of them asks about metal in the MRI room, and you clearly state that that is a dangerous situation. The questioner does not look convinced, so you provide the following example. Suppose a woman enters the MRI machine and has forgotten to remove a silver choker necklace. The...
1. Which of the following conditions will lead to a smaller variance for the intercept estimator...
1. Which of the following conditions will lead to a smaller variance for the intercept estimator for your multiple regression model? (A) X values cluster far from the origin of the X axis (B) X values closely pack around the mean of X in your sample (C) Small sample sizes (D) High correlation among the explanatory variables (E) Small error variance in the population regression function 2. R-squared (A) measures the proportion of variability of the dependent variable that is...
Question 2 14 pts You have 100 m of fine copper wire with a radius of 0.5 mm. Having only a 12 V power supply that can be treated as ideal, a pencil, and a bag of long nails made from 99.8% pure iron (relative magnetic permeability of 200) you need to make a magnet that would produce a strong magnetic field. A. (2 points) What is the resistance of the 100 m of the given copper wire? Assume the...
Question 4 (25 marks) (a) Consider the hypothetical eutectic phase diagram for metal for lead-tin system. Assume that (1) A and B phase cutectic phase diagram for metals A and B, which is similar to that 1. Assume that (1) a and B phases exist at the A and B extremities of the phase diagram, respectively; (2) the eutectic composi m, respectively; (2) the eutectic composition is 36 wt% A-64 wt% B; and (3) the composition of the a phase...
ection A uestion 1 Hook's Law, state which variables are involtved it its calculation and explain, equations or text, how to determine it (2 marks) A1. The with a square cross-section 1 cm. Determine the direct stress test specimen is being subjected to a tensile load of 3.0 kN, as shown in figure specimen is composed of Titanium, the cylinder is being subjected to. Show your resulit in MNIm s cm Figure A1 Tensile test specimen (3 marks) c) How...
Sorry for posting more than one question -- someone said they
needed the rest of the questions to better understand how to answer
one!
Question 1 1 pts Using the data provided in the table below for an "average" axon, we found in the previous lab and in the pre-lab questions for this lab) that the membrane resistance and membrane capacitance were about 44M0 = 44 x 102 and 60pF = 60 x 10-12 F, respectively, for a membrane segment...
how to solve it? number 2.36
t
be used if its thickness were to be limited to 5 mm. iation material that should d is Problem 2.35 2.36 The development of contact lenses has transformed the solutions that are available today for vision im- pairments. However, wearing them also poses several problems that includes the condition of dry eyes due to lack of cooling, oxygenation, and moisturizing or lubrication of the cornea, among others In the devel- opmental phase of...
use following to solve
3) Using an order of magnitude method (Hill), estimate the TCI in year 2006 dollars for a grass-roots plant with 100,000-lb annual production using an order-of-magnitude method based on a 10,000-lb annual production. The plant contains three 1200-ft/min centrifugal fans, five 1500-ft/min centrifugal blowers, seven 100-ft' centrifugal separators, and two 100-ft shell-and-tube heat exchangers. You may assume all materials are carbon steel, the materials handled are primarily solid, and that this plant construction is done fully...
8. [-14 Points] DETAILS SERPSE10 30.1.OP.008.CTX. MY NOTES ASK YOUR TEACHER You are a technician at an MRI center. One day some medical students enter your lab for a training session. One of them asks about metal in the MRI room, and you clearly state that that is a dangerous situation. The questioner does not look convinced, so you provide the following example. Suppose a woman enters the MRI machine and has forgotten to remove a silver choker necklace. The...
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