A slab of material of thickness 1.0 cm reduces the amount of radiation by a factor...
A slab of material of thickness 1.0 cm reduces the amount of radiation by a factor of 4.0. How much is the radiation reduced (from its original amount) if you use a 3.0 cm thickness of this material? (Answer by the factor by which it's reduced, so your answer should be > 1; e.g., if it's cut in 1/2, you would answer 2.)
Homework Answers
Add Answer to:
A slab of material of thickness 1.0 cm reduces the amount of
radiation by a factor...
QUESTION 7 A slab of insulating material has thickness 2d, with d = 1.98 cm, and...
QUESTION 7 A slab of insulating material has thickness 2d, with d = 1.98 cm, and is oriented so that its faces are parallel to the yz-plane and given by the planes x = 1.98 cm and x = -1.98 cm. The y- and z-dimensions of the slab are very large compared to d and may be treated as essentially infinite. The slab has a uniform positive charge density ρ = 1.65 μC/m3. Using Gauss’s law, find the magnitude of...
how do i find the amount of lead needed to block 99% of the gamma radiation...
how do i find the amount of lead needed to block 99% of the
gamma radiation ??
LEAD PLATES TOTAL CPM % Radiation Intensity 1 30.94 806 407 2 15 62 c) Co with lead plates: penetration factor (t) of gamma radiation i. In steps c)-e), equation (1) will be solved algebraically using only one value of I/1. and the requisite value of d. In every case, the first plate will cut out the beta particles, so you will be...
A slab of insulating material has thickness 2d and is oriented so that its faces are...
A slab of insulating material has thickness 2d and is oriented so that its faces are parallel to the yz-plane and given by the planes x=d and x=?d. The y- and z-dimensions of the slab are very large compared to d and may be treated as essentially infinite. Let the charge density of the slab be given by ?(x)=?0(x/d)2 where ?0 is a positive constant. Part B Using Gauss's law, find the magnitude of the electric field due to the...
1.0 nC If a = 1.86 x component: ON y component: -1532E-6N Question 2 cm, what...
1.0 nC If a = 1.86 x component: ON y component: -1532E-6N Question 2 cm, what would be the force on the 1.0 nC charge at the bottom of the figure? Express your answer in component 4i 4.0 cm 2.0 cm 92 Q + 3.0 cm 3.0 cm In the figure above, q, 4.11 nC, 92-8.22 nC, and ga 8.22 nC. If the net force on qi is O, then what would q be? Answer: Click "Submit Answer" below to...
Gamma-rays (Y-rays) are highly energetic electromagnetic radiation that are emitted when the nuclei undergo transitions in...
Gamma-rays (Y-rays) are highly energetic electromagnetic radiation that are emitted when the nuclei undergo transitions in the energy levels. The energy of the y-rays is upward of 100 keV. Due to the high energy, the rays are not appreciably absorbed by even several centimeters of materials such as concrete or wood. However, dense metals such lead, are effective Y-ray absorbers. The amount y-rays that are absorbed depends on the material and the energy of the gamma-rays, the higher the energy,...
1. A piece of material thickness t is wrapped n times around a cylinder of radius...
1. A piece of material thickness t is wrapped n times around a cylinder of radius r, as is shown in Fig.1 (for 4). What is the total length of material required? 1) Derive a simple equation for the length of material required for n wraps. Assume that the material forms n concentric circles 2) Explain why this model might not be sufficiently accurate, and derive an im- proved equation. You do have to evaluate your equation if it is...
Heat conduction occurs through any material, represented here by a rectangular bar, whether window glass or...
Heat conduction occurs through any material, represented here by a rectangular bar, whether window glass or walrus blubber. The temperature of the material is T2 on the left and T1 on the right, where T2 is greater than T1. The rate of heat transfer by conduction is directly proportional to the surface area A, the temperature difference T2 - T1, and the substance's conductivity k. The rate of heat transfer is inversely proportional to the thickness d. Q kA (T2-T)...
Class Activity 140 Reasoning with the Scale Factor and Internal Factor Methods CCSS CCSS SMPI, 7.6.1...
Class Activity 140 Reasoning with the Scale Factor and Internal Factor Methods CCSS CCSS SMPI, 7.6.1 1. Suppose that you have a postcard with an attractive picture on it and that you would like to scale up this picture and draw it onto paper that you can cut from a roll. The roll of paper is 20 inches wide, and you can cut the paper to virtually any length. If the postcard picture is 4 inches wide and 6 inches...
PLEASE HELP so thankful Charge A feels an electric force of magnitude F created by charge...
PLEASE HELP so thankful
Charge A feels an electric force of magnitude F created by charge B, which is a distance Raway. If charge B is moved to a distance 3R, what happens to the size of the electric force on charge A? It is reduced to 1/9 its original value It is increased to 3x its original value It stays the same It is reduced to 1/3 the original value Two charges, a +2.0 uC and a -3.0 uC...
Can you please help me with this question. Much appreciated. So I have a sample code,...
Can you please help me with this question. Much appreciated. So
I have a sample code, but we need to change the code in a way that
fits the problem.
A planar slab of material is initially at a temperature of 300 K. At the time t=0, microwave radiation is directed at the material, leading to internal heat generation that is uniform within the material. The sides of the slab experience negligible heat losses and a water bath maintains the...
how do i find the amount of lead needed to block 99% of the
gamma radiation ??
LEAD PLATES TOTAL CPM % Radiation Intensity 1 30.94 806 407 2 15 62 c) Co with lead plates: penetration factor (t) of gamma radiation i. In steps c)-e), equation (1) will be solved algebraically using only one value of I/1. and the requisite value of d. In every case, the first plate will cut out the beta particles, so you will be...
1.0 nC If a = 1.86 x component: ON y component: -1532E-6N Question 2 cm, what would be the force on the 1.0 nC charge at the bottom of the figure? Express your answer in component 4i 4.0 cm 2.0 cm 92 Q + 3.0 cm 3.0 cm In the figure above, q, 4.11 nC, 92-8.22 nC, and ga 8.22 nC. If the net force on qi is O, then what would q be? Answer: Click "Submit Answer" below to...
Gamma-rays (Y-rays) are highly energetic electromagnetic radiation that are emitted when the nuclei undergo transitions in the energy levels. The energy of the y-rays is upward of 100 keV. Due to the high energy, the rays are not appreciably absorbed by even several centimeters of materials such as concrete or wood. However, dense metals such lead, are effective Y-ray absorbers. The amount y-rays that are absorbed depends on the material and the energy of the gamma-rays, the higher the energy,...
1. A piece of material thickness t is wrapped n times around a cylinder of radius r, as is shown in Fig.1 (for 4). What is the total length of material required? 1) Derive a simple equation for the length of material required for n wraps. Assume that the material forms n concentric circles 2) Explain why this model might not be sufficiently accurate, and derive an im- proved equation. You do have to evaluate your equation if it is...
Heat conduction occurs through any material, represented here by a rectangular bar, whether window glass or walrus blubber. The temperature of the material is T2 on the left and T1 on the right, where T2 is greater than T1. The rate of heat transfer by conduction is directly proportional to the surface area A, the temperature difference T2 - T1, and the substance's conductivity k. The rate of heat transfer is inversely proportional to the thickness d. Q kA (T2-T)...
Class Activity 140 Reasoning with the Scale Factor and Internal Factor Methods CCSS CCSS SMPI, 7.6.1 1. Suppose that you have a postcard with an attractive picture on it and that you would like to scale up this picture and draw it onto paper that you can cut from a roll. The roll of paper is 20 inches wide, and you can cut the paper to virtually any length. If the postcard picture is 4 inches wide and 6 inches...
PLEASE HELP so thankful
Charge A feels an electric force of magnitude F created by charge B, which is a distance Raway. If charge B is moved to a distance 3R, what happens to the size of the electric force on charge A? It is reduced to 1/9 its original value It is increased to 3x its original value It stays the same It is reduced to 1/3 the original value Two charges, a +2.0 uC and a -3.0 uC...
Can you please help me with this question. Much appreciated. So
I have a sample code, but we need to change the code in a way that
fits the problem.
A planar slab of material is initially at a temperature of 300 K. At the time t=0, microwave radiation is directed at the material, leading to internal heat generation that is uniform within the material. The sides of the slab experience negligible heat losses and a water bath maintains the...
Most questions answered within 3 hours.
-
What is meant by a “term premium”?
What can explain such a premium? Is it a...
asked 42 minutes ago -
23. Which molecule has only covalent bonds? A. CO2 B. Al2O3 C.
Mg3N2
24. The octet...
asked 1 hour ago -
the
total pressure for a mixture of N2O4 and NO2 is 2.20 atm. If Kp=
7.10...
asked 1 hour ago -
Delaware Corp. prepared a master budget that included $22,385
for direct materials, $28,600 for direct labor,...
asked 1 hour ago -
For pesticide HCB (hexachlorobenzene), its logarithmic partition
coefficient log Kow is 5.6. What would be the...
asked 1 hour ago -
A chemist requires 0.422 mil Na2CO3 for a reaction. How many
grams does this correspond to?
asked 1 hour ago -
If the vapor pressure of carvone is approximately 9.4 torr at 99
°C, approximately how much...
asked 1 hour ago -
A juice bottling company is carrying out a test at 10%
significance that the mean population...
asked 1 hour ago -
What is the reflectivity (in percent) needed to keep water at a
temperature near its freezing...
asked 1 hour ago -
Suppose that the average surface temperature of Earth is 300K.
Assume this is uniform over its...
asked 1 hour ago -
Draw the condensed structural formula for alkenes and alkynes or
the line-angle structural formula for cycloalkenes...
asked 1 hour ago -
M. Laing has suggested a new arrangement of the periodic table
(J.Chem.Ed.1989, 66,
746). Answer the following...
asked 2 hours ago