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Mass-attenuation coefficient of aluminium (Al) and lead (Pb)in 300 keV is 1.042E-01 and 4.031E-01, respectively. The material density of Al and Pb is 2.7 and 11.35 g/cm^3, respectively.
(a) What thickness of Al and Pb are needed to reduce the number of 300 keV photons in a narrow beam to one-fourth the incident number?
(b) Compare the thickness in cm and g/cm^2
When four people with a combined mass of 305 kg sit down in a 2.0 103-kg car, The four people get out of the car and bounce it up and down. What is the frequency of the car's vibration
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the mass of platinum is 21.4 x 103 kgm3. a platinum wire with a radius of 0.500mm 1.20 m long fixed at both ends has a
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If a curve with a radius of 79 meter is perfectly banked for a van traveling 80 km/h, find the coefficient of static friction for a van not to skid when traveling at 100 km/h
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All atoms of an element have the same Select one: a. mass number b. atomic number c. number of isotopes d. number of neutrons Which particle is the least massive? Select one: a. proton b. electron c. nucleus d. neturon An electron is a particle with ..
A vertical straight wire carrying a 9.0 A current exerts an attractive force per unit length of 7.0X10^-4 N/m on a second parallel wire 8.0 cm away
An infinitely long conducting cylinder of radius a carries a change qi per unit length. If ρ is the perpendicular distance from the axis of the cylinder. Find the scalar potential φ everywhere.
a 500 g mass hangs at the end of a 40 cm long string. it is struck by a 250 g mass moving at 0.5 ms to the right.
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