The semi-major axis of callisto's orbit around jupiter is 0.013 au. the period of its orbit is 0.046 years. what is jupiter's mass?
a. 0.00029 solar masses
b. 0.0010 solar masses
c. 0.58 solar masses
d. 1.7 solar masses
e. 960 solar masses

(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