what are the charges for ions formed in groups 1 2 13 14 15 16 17 and 18 in order to achieve a noble gas electron configuration

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

The dashed segment of the plotted experiment in the graph in the lesson is called an: interpolation extrapolation extension assumption