Answer: The variable that you manipulate is called the independent variable. The variable that you measure is called the dependent variable.
In Rutherford's gold foil experiment, some of the positive particles would pass through the foil and some would bounce off. This led to a new theory that all of the positive subatomic particles were in the center of the atom instead of evenly spread throughout.
The frequency of the wave will not change. Since the change in medium doesn't affect the source of the waves, the frequency of those waves do not change.
Hope this helps! :)
Minnaloushe<span> was Iseult Gonne's cat (the daughter of Yeats' unrequited love, Maud Gonne.) I've never been able to find an explanation for the name's </span>meaning<span>, and I don't think it's an Irish word</span>
