A2.0 kg tumor is being irradiated by a radioactive source. the
tumor receives an absorbed dose of 12 gy in a time of880 s. each
disintegration of theradioactive source produces a particle that
enters the tumor anddelivers an energy of 0.40 mev. whatis the
activity n//t of
theradioactive source?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?