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Question1
Consider a radius=1.0cm circular nondiverging pencil beam of 3x10^8 photons, one-third with an energy of 1 mev, remaining two-thirds with an energy of 1.5 mev. Imagine narrow beam geometry. A 2cm broad carbon absorber can be placed in the path of beam prior to the beam striking a detector. Find out-
A. fluence at the detector location with the absorber present.
B. energy fluence at the detector location with the absorber present
C. energy fluence at the detector location with the absorber present
D. ratio of the detector response with and without the absorber present for a detector whose response is proportional to air collision kerma
E. exposure at the detector location with the absorber present
F. fluence weighted mean attenuation coefficient of the original beam
question1a boat crosses a river of width 171 m in which the current has a uniform speed of 1.51 ms. the pilot maintains
A diffraction grating of 6000 lines/cm is illuminated by monochromatic light. How far from the central maximum is the first order maximum
Two point charges are located on the axis as follows: charge = -1.80 at = -0.500 , and charge = 2.20 at the origin (= 0). What is the direction of the net force
A particle has an acceleration of 6.19 m/s^2 for 0.350 s . At the end of this time the particle's velocity is 9.26 m/s What was the particle's initial velocity?
Three deer, A, B, and C, are grazing in a field. Deer B located 64.00 m from dear A at an angle of 50° north of west. Deer C is located 76° north of east relative to dear A. The distance between deer B and C is 93m. What is the distance between de..
There is a square with 4 charges. q3 is 3x10^-6 C and in the top left q4 is -2x10^-6 C and in the top right q2 is 2x10^-6 C and in the bottom left q1 is 4x10^-6 C and in the bottom left The distance between each charge on the outer edge of the squ..
A 1.5m -long barbell has a 22kg weight on its left end and a 35kg weight on its right end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity
A small steel sphere of mass 0.40kg is attached by a 5.0m long cord to a swivel pin set into the surface of a frictionless table top. What is the magnitude of the centripetal accerleration of the sphere
Illustrate how much ice must melt in order to cool the hot water down to this temperature?
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. A charge of -4.9×10-6 C is placed at the center of the cube. What is the magnitude of the force on the charge at the center of the cube?
The coefficient of static friction between the wall and the rod is μs = 0.575. Determine the minimum distance x from point A at which an additional weight w (the same as the weight of the rod) can be hung without causing the rod to slip at point A.
Two stars are 5.8 × 1011 m apart and are equally distant from the earth. Find the maximum distance that these stars could be from the earth
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