Iron, when heated, will emit the spectrum of light shown in the picture. Why doesn't iron emit light of all frequencies?

List the path of the respiratory system

What is the atomic number of an atom that has 6 protons

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