An Erbium-166 nucleus contains 68 protons. The atomic mass of a neutral Erbium-166 atom is 165.930u, where u = 931.5 MeV/c². In this question you may use that the mass of a proton is 938.27 MeV/c², the mass of a neutron is 939.57 MeV/c² and the mass of an electron is 0.511 MeV/c². i. Calculate the nuclear binding energy per nucleon, giving your answer in units of MeV. ii. Electrons with an energy of 0.5 GeV are scattered off the nucleus. Estimate the scattering angle of the first minimum in the resulting diffraction pattern.

How fast will a penny hit the ground if it is dropped from the rooftop of a 291-meter-high building?

What concept was missing in peoples mind when they couldn't believe Earth was moving?

A rock is thrown upward with a velocity of 12 meters per second from the top of a 24 meter high cliff, and it misses the cliff on the way back down. When will the rock be 5 meters from ground level? Round your answer to two decimal places.