Physics, 22.07.2019 04:00 halfpint1168
Archaeologists use the radioactive decay of carbon-14 to estimate the age of fossils and can be used on samples of bone, cloth, wood and plant fibers. the half-life of carbon-14 is 5,730 years. several human bones have been unearthed at an archaeological dig. 25% of the original carbon-14 isotope is remaining and scientists estimate the bones to be years old.
Answers: 1
Physics, 22.06.2019 20:00, dee6991
Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?
Answers: 1
Physics, 23.06.2019 02:00, jones03riley
Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8
Answers: 1
Archaeologists use the radioactive decay of carbon-14 to estimate the age of fossils and can be used...
Mathematics, 26.03.2021 16:40