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When any radioactive dating method is used, experimental error in the measurement of the sample's activity leads to error in the estimated age. In an application of the radiocarbon dating technique to certain fossils, an activity of 0.15 Bq per gram of carbon is measured to within an accuracy of 13 percent. Find
(a) the age of the fossils and
(b) the maximum error (both in years) in the value obtained. Assume that there is no error in the 5730-year half-life of 6C14 nor in the value of 0.23 Bq per gram of carbon in a living organism.
A solenoid with 1200 turns per meter has a diameter of 9.00 cm. Find the magnitude of the magnetic flux through the loop
You are running toward an approaching marching band. You are moving at 9.3 m/s and the band is moving at 2.7 m/s
The coefficient of kinetic friction between the rock and the surface is 0.300. Illustrate what average thermal power is produced as the rock stops?
A beam of particles is directed at a 0.021-kg tumor. There are 2.3 x 1010 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 12 s
Bob and Ray push on a door from opposite sides. They both push perpendicular to the door. Bob pushes 0.63 m from the door hinge with a force of 89 N. What is the net torque on the door
A 9.8 kg board is wedged into a corner and held by a spring at a 50.0° angle, Find the amount by which the spring is stretched from its unstrained length
To what angle beta can the sculpture be tipped.
A 0.9 inch tall clock is 24 cm in front of a diverging lens which has a focal length of -33.5 cm. Paying attention to sign, answer the following questions. a. What is the image distance? cm b. What is the image's height?
An astronomical telescope is designed with an overall magnification of 80x. The objective has a focal length of 98.0 cm. How far should the eyepiece be from the objective
What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.
If a beam is incident normal (perpendicular to the surface) to a plane mirror, what is the angle of reflections
Dr. Winger stands on the drill field just north of President Lee's statue. He walks 20.0 m north on the sidewalk toward Lee Hall while thinking about going back to work. Determine how far Dr. Winger is from where he started
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