Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Solve the following questions:
Question I: A radioactive sample produces 3840 decays per minute at one point in an experiment and 308.09 days later produces 240 decays per minute.
Part a: What is the half time?
Part b: What is the decay constant?
Part c: What is the mean lifetime of the material?
Question II: What fraction of a sample of cobalt-60 is left after 36.8956 yr. ( the half-life of cobalt-60 is 5.2708 yr.)
Question III: What period of time is required for a sample of radioactive oxyden-15 to lose 99.5% of its activity? (The half-life of uranium is 122.24 yr).
Give the detailed explanation of above question.
A 0.10 kilogram ball is thrown straight up into the air with an initial speed of 12 m/s. Obtain the momentum of the ball at its maximum height
a steel rod is used to transfer heat from a chamber at 300 k to a chamber at 250 k. which of the following changes in
the mayor of your home town is worried that magnetic fields might cause cancer and proposes that the electric power
A 500 gram block attached to an ideal spring (k = 80 N/m) oscillates on a horizontal frictionless surface. Find the compression distance (x) of the spring
A particular radioactive source produces 125 mrad of 1 MeVgamma rays per hour at a distance of 1.0 m. How long could a person stand at thisdistance before accumulating an intolerable dose of 1 rem
A hot-air balloon is ascending at the rate of 14 m/s and is 57 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?
Two facing surfaces of two large parallel conducting plates separated by 11.5 cm have uniform surface charge densities such that are equal in magnitude but opposite in sign. The dissimilarity in potential among the plates is 600 V.
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
Two particles are fixed to an x axis: particle 1 of charge -7.50*10^-7 C at x=6.00 cm, and particle 2 of charge +7.50*10^-7 C at x=22.0 cm. what is their net electric field
Neglect air resitance. Find rocket's kinetic energy when the rocket is 1000 km above Earth's surface. Illustrate what is the max heigh that the rocket reaches.
Consider Joule's experiment described in the insight below. Assume the mass m = 2.5 kg and the fluid is water with a volume of 1.19 L. What is the increase in the temperature of the water
A 925 N crate rests on the floor. How much work is required to move it at constant speed 5.4 m vertically
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd