Caleb is swinging rachel in a circle with a centripetal force of 533 n. if the radius of the circle is 0.75 m and rachel has a mass of 16.4 kg, how fast is rachel moving? round to the nearest tenth. m/s

(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