What is the average speed of an athlete who runs 1000 m in 2 minutes ？

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

What structural formula represents 4 electrons shared between two atoms?