- #1
Pinchy444
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1. A scientist is investigating the effect of different types of radiation on the surface of a piece of Sodium metal. He uses a freshly cut surface on a Sodium plate.
2. a) Which of the variables is the dependent and independent variables?
b) Why must the surface of the Sodium metal be carefully prepared?
3. a) I assume that the independent variable is the frequency of the light being emitted and the dependent variable is the Stopping Voltage.
b) I believe that the metal should be prepared carefully so as to avoid any impurities being found on the metal hence effecting overall experimental results. Am I correct for both questions?
Any help will be appreciated.
2. a) Which of the variables is the dependent and independent variables?
b) Why must the surface of the Sodium metal be carefully prepared?
3. a) I assume that the independent variable is the frequency of the light being emitted and the dependent variable is the Stopping Voltage.
b) I believe that the metal should be prepared carefully so as to avoid any impurities being found on the metal hence effecting overall experimental results. Am I correct for both questions?
Any help will be appreciated.