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How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.