A radioactive substance has a half-life of 5 million years. What is the age of a rock in which 25% of the original radioactive atoms remain? You must show your work or explain how you came up with your answer for full credit.

An important skill for the beginning home inspector is a. familiarity with reading electric meters. b. good telephone interviewing technique. c. experience in issuing building permits. d. ability to interpret building codes.

*giving 20 free points plus brainliest for this drivers ed question * ! which of the following is not the name of a dash gauge? a. speedometer b. gear meter c. odometer d. temperature gauge

Which of the following statements concerning the effects of happiness is not true? select the best answer from the choices provided feelings of happiness generally lead individuals to demonstrate less care toward others. happy individuals are generally more playful than individuals who are not. research has linked levels of happiness to increases in creative problem solving. happiness, along with love, has been found to provoke prosocial behaviors.