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Answer the following questions:
Question I. A radioactive sample produces 46035 decays per minute at one point in an experiment and 308.09 days later produces 837 decays per minute.
Part i. What is the half time?
Part ii. What is the decay constant?
Part iii. What is the mean lifetime of the material?
Question II. What fraction of a sample of carbon-14 is left after 21487.5 yr. (the half-life of carbon-12 is 5730 yr.)
Question III. What period of time is required for a sample of radioactive uranium-235 to lose 99.280% of its activity? (The half-life of uranium is 7.038*10 yr).
Explain the each step.
An electric point of 6 mill- coulomb is placed in the center of a metallic spherical shell of inner diameter 15 cm and thickness 18 cm. Calculate the electric field at the following distances from the point charge. 10cm, 16cm, 25 cm. The charge is..
There is a maximum depth at which a diver can breathe through asnorkel tube because as the depth increase, What is the external-internal pressure differnece when the diver's lungsare at a depth of 6.1m
An inspector wants a mirror that produces an upright image with magnification of 7.5 when it is located 14.0 mm from machine part. What kind of mirror would do this job
By calculation, determine the wavelength of three principal visible lines of hydrogen from energy transitions n=3, 4
An organ pipe that is opened at both ends and is near a heating pipe such that the temperature is 35.00 C. Thefundamental frequency is 5000 Hz.
An object is placed 13.5 centimeter in front of a convex mirror, the image being 3.81 centimeter behind the mirror. Find how far in front of mirror is second object placed
An object has a kinetic energy of 310 J and a momentum of magnitude 22.1 kg · m/s. Find the mass of the object
A person who weighs 715 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. find the area of contact between each tire and the ground
A 0.575 kg mass falls from a height of 3.95 m. If all of the energy of this mass could be converted to visible light of wavelength 5.29E-7 m
A 0.0575 kg ball is dropped from a height of 6 meters. If theball hits the ground and rebounds to a height of 5 meters, what was the impulse exerted on the ball by the ground
suppose that visible light enters a Plexiglas cube containing water at a 20o angle of incidence, travels through the water and exits the cube.
Your roommate is working on his bicycle and has the bike upside down. He spins the 66.0cm -diameter wheel, Find the pebbles speed and acceleration
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