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A bean of 50 keV x-rays (104/second) a beam of a750 keV photons are incident on a 1 centimeter thick sample of bone. Ca density =1.93g/cm3
Compute the attenuation for each beam.
Compute the energy disposition for each beam.
A small block has a horizontal velocity of 4.00 m/s as it slides off the edge of a table, how far does the block travel horizontally while it is in the air
A 984-kg satellite orbits the Earth at a constant altitude of 106-km. What is the change in the system's potential energy
a gas containing 25 mol co2 and 75 ch4 is treated in a gas conditioning plant. the stream is fed to an absorber at a
A spring is used to propel a 0.400-kg hockey puck across level (frictionless) ice that becomes a rough (not frictionless) ramp inclined at 27°. If the puck reaches a maximum vertical height of 14 cm on the ramp, what distance does it travel along t..
Astronomers determine that a nearby galaxy is moving toward our galaxy at a speed of 720.0 km/s with respect to the Earth, what was the wavelength emitted by the star
The image produced by a concave mirror is located 38 cm in front of the mirror. How far in front of the mirror is the object located
An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section is 5.00 m/s. What is the pressure in the narrow section of the pipe
An "extreme" pogo stick utilizes a spring whose uncompressed length is 48 and whose force constant is 1.1×104. Calculate her upward acceleration, in g's at that moment
An aluminum-alloy rod has a length of 10.007 cm at 16.600 °C and a length of 10.023 cm at the boiling point of water. find the length of the rod at the freezing point of water
A pulsar is a collapsed, rotating star that sends out a narrow beam of radiation, like the light from a lighthouse. at what rate does an observer on the Endeavor see pulses emitted
A projectile is fired from the origin (at y = 0 m) as shown in the figure. The initial velocity components are = 920 and = 79 . The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q. In the figure, the y-co..
Describe a solar cell. In your description, include the description, the efficiency of the cell and what the cell produces. Describe solar thermal energy
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