why is determining a system's uncertainty important? give an example of a real world application. we used ruler and then a digital caliper to measure density of the wooden block. which one should be more accurate, and why? 2.

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”