How well did tossing the pennies simulate half lives?

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

What is the independent variable in this investigation? mass volume sample number substance density