The half life of Po -218 is 3.04 minutes. a sample of polonium contains 5000 gramps of Po-218. What mass of Po-218 will remain after 18.24 minutes?

Who needed protection from railroads? 1865-1900 apush

Jacob’s four-month-old infant is crying continuously. while jacob’s wife suggests that he pick up the baby, jacob’s mother thinks that picking up the baby each time she cries is bad for the baby. why is jacob’s wife right? a. babies sleep better when carried. b. babies learn to cry whenever they want someone to hold them. c. babies may choke if crying while lying on their back. d. babies develop a sense of trust that someone is there to provide care.

Identify one way in which the changes during the industrial revolution can be considered a political turning point in world history