2. June uses her personal car for work as an employee. For the year, June drove 5,000 business miles and 30,000 total miles. Her car-related expenses include […]
Uranium-235 (U-235) radioactively decays into Lead-207 (Pb-207). If I’m measuring the number of atoms in a mineral, and I find that there are 1000 atoms of U-235 and […]