2. Assuming that a single proton is a sphere of radius 1 fm and two protons are fired at each other with the same kineti
Posted: Thu Apr 28, 2022 8:57 am
2. Assuming that a single proton is a sphere of radius 1 fm and two protons are fired at each other with the same kinetic energy Ecalculate (a) the final E, if these particles are brought to rest by their mutual Coulomb repulsion when they are just touching each other? Taking this value of E, as a representative measure of the height of the Coulomb barrier, calculate (b) the temperature of a gas of protons that have this average Kinetic energy and thus have equal to the height of the Coulomb barer? 138 x 1073 JIK. 3. The ratio of 2000 to 2300 in natural uranium deposits today is 0.0072. What was this ratio 2 billion years ago if known that the half-life of the two isotopes is 7.04 10 years and 4.47 x 10 years, respectively?