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A) Describe the two physical processes that give rise to the production of X radaition when electrons bombard the target of a diagnostic x-ray tube operation at 1000kvp. Explain the shape of the energy spectrum of photons from the target, detailing how this is modified by changes in kVp and target material.
(b) Describe how this spectrum may be modified using filter and account for changes to the beam intensity and penetrative qualities when filters are used. Explain why compound filters are sometimes used to filter x-ray beams.
(c) Describe briefly the different spectrum of X-rays used for mammography examinations.
A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 145 N. The coefficient of static friction between the foot of the ladder and the ground is 0.40. A man weighing 760 N..
The interatomic spacing in a crystal of table salt is 0.280 nm. This crystal is being studied in a neutron diffraction experiment, similar to the one that produced the photograph in the figure. How fast should a neutron (mass =1.67*10-27 kg) be movin..
A spiral density wave refers to a region of enhanced density inthe Galaxy which rotates more slowly than the stars and gas. As far as an astronomer is concerned, a metal refersto. Where are the majority of older, metal-poor stars found in theMilky Wa..
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
LC circuit consists of a 20.0 mH inductor and a 0.750 µF capacitor. find the greatest potential difference across the capacitor
A concave mirror produces an upright virtual image that is 3.00cm times taller than the object. The focal length is 15.0cm. Dtermine the distance to the image
A photon of initial energy 0.10 MeV undergoes Compton scattering. After scattering, the photon's energy is 0.09 MeV. Find the scattering angle for the photon
What is the speed of the arrow as it leaves the bow.Two point charges, Q_1 = -6.9 mu C and Q_2 = 2.0 mu C are located between 2 oppositely charged parallel plates.
Two 2.00 cm X 2.00 cm plates that form a parallel-plate capacitor are charged to ± 0.708 nC. had are the electric field strength inside and the potential difference across the capacitor if the spacing between the plates is (a) 1.00 mm and (b) 2.00 ..
a home receives 1.7kw of electric power from a transformer on a nearby pole. the line from the substation to the
In the railroad freight yard, an empty freight car of massmrolls along a straight level track at1.0m/s, Suppose instead that the two cars are at rest after the collision. With what speed was the loaded boxcar moving before the collision if the empt..
In a continuous printing process paper is drawn into the presses at a constant speed v Denoting by r the radius of the paper roll at any given time and by b the thickness of the paper, derive an expression for the angular acceleration of the paper..
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