Why are significant figures important in physics? A. Measuring devices aren’t always 100% accurate
B. To account for the high degree of accuracy in humans
C. They help reduce or eliminate the need for accuracy in humans
D. All of the above

Not C!

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v