Advanced Placement (AP), 05.11.2020 19:00 wulfredo67

In science, it is important to be able to distinguish between an experiment and other scientific investigations. Which of the following is the best example of an experiment? measuring the frequency of the fire alarm at your school

measuring the wavelengths of various sources of blue light

measuring the wavelengths of x-rays and gamma rays from Barnard's Star

measuring the change of frequency of a car horn every five meters as the car drives away

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