An applied force of 210 N pulls a 30-kg object to the right. The object also is affected by a 180 N frictional force. What is the object's rate of acceleration

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