Question

in part 2 of the lab activity, you will make two marks -- one at the 20 cm mark of your ruler. how far away (in cm) from the first mark should you make your second mark?

Explanation:

Step1: Analyze the problem context

Since the problem is about a lab activity involving ruler marks, and typically in such setups (like for measuring motion or intervals), a common interval is 10 cm (or other standard, but often 10 cm is used for simplicity, or maybe the second mark is at 30 cm, so distance from 20 cm is 10 cm? Wait, maybe the standard here is that the second mark is 10 cm away? Wait, maybe the lab activity is about a 10 cm interval. Wait, maybe the first mark is at 20 cm, and the second is at 30 cm, so the distance is 10 cm. Or maybe it's 10 cm. Wait, perhaps the problem is missing some info, but in typical lab setups for such questions, the distance is 10 cm. Wait, maybe the first mark is at 20 cm, and the second is at 30 cm, so 30 - 20 = 10. So the distance is 10 cm.

Step2: Calculate the distance

Assuming the second mark is at 30 cm (a common interval), then distance = 30 - 20 = 10 cm.

Answer:

10