Which of these waves cannot travel in a vacuum? (1 - microwave(2 - light wave(3 - sound wave(4 - electromagnetic wavebrainliest for correct!

Using the given data table, calculate the acceleration of the skateboarder. you can use either form of the equation below?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?