Iron-59 is used in medicine to diagnose blood circulation disorders. The half-life of Iron-59 is 44.5 days. A 2mg sample is injected into a patient. How long would it take for the sample to decay until only 0.25mg is left in the patient?

If jesus walked on water, does that mean he swims on land

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.