A 3.00 kg object is lifted from the floor and placed on a shelf that is 2.50 m above the floor. What was the work done in lifting the object?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material