Now the energy of a neutrino is measured at a specific time. If the uncertainty in the time measurement is 2.31 x 10-24 seconds, what is the minimum uncertainty in the energy?

What is the closest distance a 7.5 MeV alpha particle can reach when incident on a gold foil?

According to the article Alien Antimatter Crashes into Earth 2 : More than 60 years ago, future Nobel laureate Sheldon Glashow predicted that if an collided with an antineutrino the antimatter answer to the nearly massless neutrino electron, it could produce a cascade of other particles. The "Glashow resonance - phenomenon is hard to detect, in large part because the antineutrino needs about 1,000 %3D times more energy than what's produced in the most powerful colliders on Earth. Let's compare this event to an ordinary baseball with a mass of 146 g. Please use three significant figures in your calculations.

Question:  The radionuclide Tc-99m is a gamma photon emitter. The emitted gamma photonenergy is 141 keV. The scintillation crystal in a Gamma camera will convert the single gammaphoton to a burst of visible photons. Assuming the generated visible photons wavelength is 550nm, calculate how many visible 550-nm photons will have the same amount of energy as a single141-keV gamma photon?