The half-life of carbon-14 is 5,730 years. how many grams of parent material will remain from a 120-gram sample of carbon-14 after 2 half-lives?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Ways that industry and agriculture use physical properties to separate substances

Anthropology is the study of the effects of disease on the body, while forensic anthropology studies the disease of crime a.) true b.) false