The half-life of u-235 an alpha emitter is 71x108yr
The half-life of U-235 , an alpha emitter, is 7.1x10^8yr. Calculate the number of alpha particles emitted by 5.1mg of this nuclide in 3.0 minute.
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if the energy strored in the fully charged battery is used to lift the battery with 100% efficiency, what height is attained. Assume that the acceleration due to gravity is 9.8 m/s^(2) and is constant with height.
Perform an analysis of the social / demographic, technological, economic, environmental / geographic, and political / legal / governmental segments to understand the general environment facing Great Lakes. Describe how Great Lakes will be affected
A loaded ore car has a mass of 950 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch, What maximum power must the motor provide
What is the best way to develop, introduce, regulate, provide access, and pay for new health technologies in the 21st century?
Calculate the final temperature of the solution, assuming the delta H reaction for HCl + NaOH = -56.2 kJ/mole and that the solution's specific heat is the same as water: 4.184 J/g Celsius.
Using PHStat construct the probability distribution for the value of a 2 card hand dealt from a standard deck 0f 52 cards (all the face cards have a value of 10 and the ace a value of 11). What is the proabolity of being dealt 21?
Determine whether the following signals are periodic. If they are, find the smallest periods (fundamental periods). a) f(x,y) = sin (2 pi x) cos(4 pi y) b) Discrete signal: f(m,n) = sin ( pi * m / 5) cos(pi * n / 5)
A 46.0-kg girl is standing on a 159-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, What is the velocity of the plank relative to the ice surface
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