The decay energy of a short-lived particle has an uncertainty of 1.0 MeV due to its short lifetime. What is the smallest lifetime it can have?
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- What is the kinetic energy of each electron in a beam of electrons if the beam produces a diffraction pattern of a crystal which is similar to that of a beam of 1.00 eV neutrons? (knowing that electron mass is 9.11*10^-31 kg and neutron mass is 1.67*10^-26 kg). What are the specific equations that are being used in this problem?8. An electron is trapped within a sphere whose diameter is 5.20 x 10-15 m (about the size of the nucleus of a medium sized atom). What is the minimum uncertainty in the electron's momentum? kg.m/sWhat is the uncertainty in the momentum of a particle if you know its location to an uncertainty of 0.5 nm.
- The average lifetime of a muon is about 2 us. Estimate the minimum uncertainty in the energy of a muon.After much effort a physicist is able to measure the location of a proton to within 2.11*10^-16 m. What is the minimum uncertainty in the momentum of the proton?The diameter of a Hydrogen atom is about 10.6 nm. What is the minimum uncertainty in momentum of an electron along this diameter if it's uncertainty in position is equal to the diameter of the atom? a) 1.17 x 10^-25 kgm/s b)9.94 x 10^-26 kgm/s c)1.17x10^-26 kgm/s d) 9.94x10^-27 kgm/s e)
- An elementary particle has a very short lifetime, 1.34 x 101 s. What is the minimum uncertainty with which we can measure its energy? Please give your answer in electron Volts.An electron initially at rest is accelerated across a potential difference of 8 kV. What are its wavelength, momentum, kinetic energy, and total energy? 13.8 90.68 8 518 pm ✔ keV/c keV (kinetic) XkeV (total)5. An electron ( me = 9.11 × 10−31 kg ) and a bullet ( m = 0.02 kg) each have a velocity of magnitude 500 m/s, with a precision within 0.01%. In what limits is it possible to determine the position of objects along the velocity direction?What can you conclude from comparing your results for the electron and for thebullet?