An isotope has a half life of 2 days. After 6 days, how much of the original material is left?

A. 12%
B. 12.5%
C. 30.2%

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

Awalk up the phase change graph worksheet

Which describes increasing the efficiency of energy resource