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A 10 cubic meter particulate air sample collects 0.1 millicurie of cobalt-60 on its filter. What is the airborne radioactivity concentration? Using 10 CFR 20, if the particles are composed of cobalt oxide, how many DAC does this represent? Show your work.
X-rays having an energy of 300 keV undergo Compton scattering from a target. The scattered rays are detected at 37.0° relative to the incident rays. Find (a) the Compton shift at this angle, (b) the energy of the scattered x-ray, and (c) the energ..
A semicircle of radius a is charged.positive charge +Q is distributed uniformaly around the left half of the semicircle, what are the magnitude and the direction of the electric field
A viewing window in the Atlanta aquarium is 55 inches wide and 46 inches high. what is the outward force on the window
its nighttime and youve dropped your goggles into a swimming pool that is 4.0 m deep. if you hold a laser pointer 1.0 m
The melting point of gold is 1173?C, and the boiling point is 2481 C. Compute the difference between these temperatures in Kelvin
two infinite, parallel planes have excess charge densitites o and -2o, what are the magnitude and direction of the electic field between the planes
to combat wasteful habits we often speak of "conserving engery", by which we mean turning off lights, find the difference in energy conservation and conserving energy
A block of mass m1=3.20 kg on a frictionless plane inclined at angle 30 degrees is connected by a massless cord over a massless, Calculate the acceleration of each block
A sample of an unknown material appears to weigh 285 N in air and 180 N when immersed in alcohol of specific gravity 0.700. What is the density of the material
A 12.9-?F capacitor, a 22.1-k? resistor, a switch, and a 25.0-V battery are connected in series. What is the rate of change of the elecric field between the plates of the capacitor
A steel band exerts a horizontal force of 76N on a tooth at point B. What is the torque on the root of the tooth about point A.
A cockroach of mass m lies on the rim of a uniform disk of mass 7.00 m that can rotate freely about its center like a merry-go-round. obtain the angular velocity of the cockroach-disk system
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