91Ó°ÊÓ

Using the semiempirical binding energy formula estimate the mass of a europium- $152$ atom.

Question:How is it that a high binding energy is a low energy?

How much Kinetic energy released and what is the daughter nucleus in the$\mathit{Î\pm }$decay of polonium-$\mathbf{210}$ ?

How much Kinetic energy released and what is the daughter nucleus in the ${\mathbf{β}}^{\mathbf{+}}$ decay of nitrogen-13?

What is the recoil speed of the daughter nucleus when ${}_{\mathbf{67}}^{\mathbf{152}}\mathbf{Ho}$$\mathbf{Î\pm }$ decays.

Eighty centuries after its death, what will be the decay rate of 1g of carbon from the thigh bone of an animal?

A fossil specimen has ${}^{14}C$decay rate of$5.0s^{-1}$

(a) How many carbon-14 nuclei are present?

(b) If the specimen is 20,000 years old, how many carbon-14 nuclei were present when the animal died?

(c) How much kinetic energy (in MeV) is released in each $\mathrm{β}-$decay and what is the total amount released in all $\mathrm{β}-$decay since the animal died?

(a) How much energy can be extracted by deuterium fusion from a gallon of sea water? Assume that an average D-D fusion yield is about per atom.

(b) A modem super tanker can hold$\text{9}×{\text{10}}^{\text{7}}$ gallons. How many "water tankers" would be needed to supply the energy need of greater Los Angeles, consuming electricity at a rate of about $\text{20 G°Â}$, for 1 year? Assume that only$\text{20\%}$ of the available energy actually becomes electrical energy.

The binding energy per nucleon is helium-3 is 2.57 MeV/nucleon. Assuming a nucleon separation of 2.5 fm, determine (a) the gravitational potential energy per nucleon, and (b) the electrostatic energy per proton between the protons. (c) What is the approximate value of the internucleon potential energy per nucleon? (d) D these results agree with the table11.2?